Academic literature on the topic 'Terrestrial mammal'
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Journal articles on the topic "Terrestrial mammal"
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Losada, María, Miguel Suárez-Couselo, and Mar Sobral. "Geographic distribution of mammal diets." Web Ecology 24, no. 2 (2024): 71–79. http://dx.doi.org/10.5194/we-24-71-2024.
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Abstract. The study of trophic interactions might be key to understanding the distribution of species on Earth. Particularly, the biogeography of heterotrophic species – such as mammals – could be strongly driven by trophic interactions (diet). Here, we map and discuss the division of dietary strategies (herbivory, frugivory, carnivory, etc.) of terrestrial mammals on a global scale. We analyzed the diet of 4854 extant terrestrial mammal species (with known range and diet data, representing 86.67 % of extant mammal species). We compiled species diets (EltonTraits database), species ranges (International Union for Conservation of Nature, IUCN, database) and climate data (WorldClim database) to illustrate how mammal dietary strategies are distributed across the globe. First, we performed a principal coordinate analysis (PCoA) with diet data. Second, we mapped the distribution of the main dietary strategies (PCoA axes) of terrestrial mammals globally. Third, we analyzed how climate relates to dietary strategies. We found that herbivory in mammals is more common in northern and desert areas, which corresponds to areas with lower minimum temperatures and lower precipitation. Mammals feeding on fruits and invertebrates (frugivory and invertivory) are more common in the tropics, which corresponds to areas with higher precipitation and higher minimum temperatures. Mammals feeding on seeds (granivory) are predominant in North America, Europe, Central Asia and Oceania, corresponding to areas with temperate environments. Carnivorous mammals are more common in the Northern Hemisphere and towards the poles, which corresponds to areas with lower minimum temperatures and less extreme dry periods. Terrestrial mammal diets show clear geographical patterns that can be partially explained by climate across the globe.
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Berteaux, Dominique, and Sandra Lai. "Walking on water: terrestrial mammal migrations in the warming Arctic." Animal Migration 8, no. 1 (2021): 65–73. http://dx.doi.org/10.1515/ami-2020-0111.
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Abstract Caribou and reindeer migrations are the tip of the iceberg when one considers migration among the 70 species of Arctic terrestrial mammals. About 26% of species indeed have migratory individuals, while 33% are non-migratory and 41% are data deficient. Such figures demonstrate the need to both better document and better understand seasonal movements in these vertebrates. Whereas spatiotemporal variations in resources are key drivers of Arctic terrestrial mammal migrations, the changes of water phase around 0°C, from liquid to solid and vice versa, have considerable impacts given that liquid water, snow, and ice differ so strongly in their physical properties. We explore how the interplay between resources and water phase shape Arctic terrestrial mammal migrations, demonstrate that a rich set of research questions emerges from this interaction, and introduce new concepts such as the micro-migrations of small mammals. We also list key questions about the migrations of Arctic terrestrial mammals, with emphasis on the impacts of climate change. We conclude by arguing that the strong exposure of the Arctic to climate change, combined with the quick development of biologging techniques, rapidly increase both the need and the capacity to enhance our knowledge of migration in Arctic terrestrial mammals.
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Rondinini, Carlo, Moreno Di Marco, Federica Chiozza, et al. "Global habitat suitability models of terrestrial mammals." Philosophical Transactions of the Royal Society B: Biological Sciences 366, no. 1578 (2011): 2633–41. http://dx.doi.org/10.1098/rstb.2011.0113.
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Detailed large-scale information on mammal distribution has often been lacking, hindering conservation efforts. We used the information from the 2009 IUCN Red List of Threatened Species as a baseline for developing habitat suitability models for 5027 out of 5330 known terrestrial mammal species, based on their habitat relationships. We focused on the following environmental variables: land cover, elevation and hydrological features. Models were developed at 300 m resolution and limited to within species' known geographical ranges. A subset of the models was validated using points of known species occurrence. We conducted a global, fine-scale analysis of patterns of species richness. The richness of mammal species estimated by the overlap of their suitable habitat is on average one-third less than that estimated by the overlap of their geographical ranges. The highest absolute difference is found in tropical and subtropical regions in South America, Africa and Southeast Asia that are not covered by dense forest. The proportion of suitable habitat within mammal geographical ranges correlates with the IUCN Red List category to which they have been assigned, decreasing monotonically from Least Concern to Endangered. These results demonstrate the importance of fine-resolution distribution data for the development of global conservation strategies for mammals.
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Ahumada, Jorge A., Carlos E. F. Silva, Krisna Gajapersad, et al. "Community structure and diversity of tropical forest mammals: data from a global camera trap network." Philosophical Transactions of the Royal Society B: Biological Sciences 366, no. 1578 (2011): 2703–11. http://dx.doi.org/10.1098/rstb.2011.0115.
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Terrestrial mammals are a key component of tropical forest communities as indicators of ecosystem health and providers of important ecosystem services. However, there is little quantitative information about how they change with local, regional and global threats. In this paper, the first standardized pantropical forest terrestrial mammal community study, we examine several aspects of terrestrial mammal species and community diversity (species richness, species diversity, evenness, dominance, functional diversity and community structure) at seven sites around the globe using a single standardized camera trapping methodology approach. The sites—located in Uganda, Tanzania, Indonesia, Lao PDR, Suriname, Brazil and Costa Rica—are surrounded by different landscape configurations, from continuous forests to highly fragmented forests. We obtained more than 51 000 images and detected 105 species of mammals with a total sampling effort of 12 687 camera trap days. We find that mammal communities from highly fragmented sites have lower species richness, species diversity, functional diversity and higher dominance when compared with sites in partially fragmented and continuous forest. We emphasize the importance of standardized camera trapping approaches for obtaining baselines for monitoring forest mammal communities so as to adequately understand the effect of global, regional and local threats and appropriately inform conservation actions.
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Ardhina, Mahdiyyah, Kaniwa Berliani, and Masitta Tanjung. "Terrestrial mammal activity in the post-rehabilitation Halaban monitoring area using camera trap data." IOP Conference Series: Earth and Environmental Science 1445, no. 1 (2025): 012081. https://doi.org/10.1088/1755-1315/1445/1/012081.
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Abstract Terrestrial wildlife species are important taxa in the recovery of ecosystems following dam removal. Their presence can shape ecosystem recovery, signal restoration of ecosystem function, and influence food web dynamics and nutrient transfer. This study investigated terrestrial mammal communities within the rehabilitation area of Gunung Leuser National Park, Indonesia, using camera trap data collected between May and December 2023. The results revealed a diverse group of mammals, including endangered species, with distinct activity patterns. Eight terrestrial mammal species were present, with the most dominant being Sus scrofa. Only one of the four keystone species of TNGL, Elephas maximus sumatranus, was present. Overlapping activity patterns among predator species suggest potential interactions and resource partitioning. These findings underscore the importance of habitat restoration for biodiversity conservation and highlight the need for ongoing monitoring to assess the long-term impacts of rehabilitation efforts on mammal communities.
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Visconti, Piero, Robert L. Pressey, Daniele Giorgini, et al. "Future hotspots of terrestrial mammal loss." Philosophical Transactions of the Royal Society B: Biological Sciences 366, no. 1578 (2011): 2693–702. http://dx.doi.org/10.1098/rstb.2011.0105.
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Current levels of endangerment and historical trends of species and habitats are the main criteria used to direct conservation efforts globally. Estimates of future declines, which might indicate different priorities than past declines, have been limited by the lack of appropriate data and models. Given that much of conservation is about anticipating and responding to future threats, our inability to look forward at a global scale has been a major constraint on effective action. Here, we assess the geography and extent of projected future changes in suitable habitat for terrestrial mammals within their present ranges. We used a global earth-system model, IMAGE, coupled with fine-scale habitat suitability models and parametrized according to four global scenarios of human development. We identified the most affected countries by 2050 for each scenario, assuming that no additional conservation actions other than those described in the scenarios take place. We found that, with some exceptions, most of the countries with the largest predicted losses of suitable habitat for mammals are in Africa and the Americas. African and North American countries were also predicted to host the most species with large proportional global declines. Most of the countries we identified as future hotspots of terrestrial mammal loss have little or no overlap with the present global conservation priorities, thus confirming the need for forward-looking analyses in conservation priority setting. The expected growth in human populations and consumption in hotspots of future mammal loss mean that local conservation actions such as protected areas might not be sufficient to mitigate losses. Other policies, directed towards the root causes of biodiversity loss, are required, both in Africa and other parts of the world.
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Harvey, Celia A., Jorge Gonzalez, and Eduardo Somarriba. "Dung Beetle and Terrestrial Mammal Diversity in Forests, Indigenous Agroforestry Systems and Plantain Monocultures in Talamanca, Costa Rica." Biodiversity and Conservation 15, no. 2 (2006): 555–85. https://doi.org/10.5281/zenodo.13462865.
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(Uploaded by Plazi for the Bat Literature Project) In order to explore the importance of indigenous agroforestry systems for biodiversity conservation, we compared the abundance, species richness and diversity of dung beetles and terrestrial mammals across a gradient of different land use types from agricultural monocultures (plantains) to agroforestry systems (cocoa and banana) and forests in the BriBri and Cabe´ car indigenous reserves in Talamanca, Costa Rica. A total of 132,460 dung beetles of 52 species and 913 tracks of 27 terrestrial mammal species were registered. Dung beetle species richness and diversity were greatest in the forests, intermediate in the agroforestry systems and lowest in the plantain monocultures, while dung beetle abundance was greatest in the plantain monocultures. The number of mammal tracks per plot was significantly higher in forests than in plantain monocultures, whereas mammal species richness was higher in forests than in either cocoa agroforestry systems or plantain monocultures. Species composition of both terrestrial mammals and dung beetles also varied across the different land use types. Our study indicates that indigenous cocoa and banana agroforestry systems maintain an intermediate level of biodiversity (which is less than that of the original forest but significantly greater than that of plantain monocultures) and provide suitable habitat for a number of forest-dependent species. Although the agroforestry systems appear to serve as favorable habitats for many terrestrial mammal species, their potential positive contribution to mammal conservation is being offset by heavy hunting pressure in the reserves. As in other agricultural landscapes, the conservation of biodiversity in Talamanca will depend not only on maintaining the existing forest patches and reducing the conversion of traditional agroforestry systems to monocultures, but also on reducing hunting pressure.
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Harvey, Celia A., Jorge Gonzalez, and Eduardo Somarriba. "Dung Beetle and Terrestrial Mammal Diversity in Forests, Indigenous Agroforestry Systems and Plantain Monocultures in Talamanca, Costa Rica." Biodiversity and Conservation 15, no. 2 (2006): 555–85. https://doi.org/10.5281/zenodo.13462865.
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(Uploaded by Plazi for the Bat Literature Project) In order to explore the importance of indigenous agroforestry systems for biodiversity conservation, we compared the abundance, species richness and diversity of dung beetles and terrestrial mammals across a gradient of different land use types from agricultural monocultures (plantains) to agroforestry systems (cocoa and banana) and forests in the BriBri and Cabe´ car indigenous reserves in Talamanca, Costa Rica. A total of 132,460 dung beetles of 52 species and 913 tracks of 27 terrestrial mammal species were registered. Dung beetle species richness and diversity were greatest in the forests, intermediate in the agroforestry systems and lowest in the plantain monocultures, while dung beetle abundance was greatest in the plantain monocultures. The number of mammal tracks per plot was significantly higher in forests than in plantain monocultures, whereas mammal species richness was higher in forests than in either cocoa agroforestry systems or plantain monocultures. Species composition of both terrestrial mammals and dung beetles also varied across the different land use types. Our study indicates that indigenous cocoa and banana agroforestry systems maintain an intermediate level of biodiversity (which is less than that of the original forest but significantly greater than that of plantain monocultures) and provide suitable habitat for a number of forest-dependent species. Although the agroforestry systems appear to serve as favorable habitats for many terrestrial mammal species, their potential positive contribution to mammal conservation is being offset by heavy hunting pressure in the reserves. As in other agricultural landscapes, the conservation of biodiversity in Talamanca will depend not only on maintaining the existing forest patches and reducing the conversion of traditional agroforestry systems to monocultures, but also on reducing hunting pressure.
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Imre, István, and Darren Derbowka. "Major Threats Facing Terrestrial Mammals in Canada." Canadian Field-Naturalist 125, no. 3 (2011): 213. http://dx.doi.org/10.22621/cfn.v125i3.1223.
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Largely due to influences related to dramatic human population growth, threats to many species are on the rise globally. An examination of mammals assessed by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) determined the major threats facing terrestrial mammal populations in Canada. Significant threats were associated with habitat loss and overall mortality caused directly by humans. Carnivores and rodents differed substantially in mortality caused directly by humans and loss of food resources. Large mammals were more affected by climate change than small mammals.
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Ríos-Solís, Jesús Alejandro, José Juan Flores-Martínez, Víctor Sánchez-Cordero, and Mario C. Lavariega. "Diversity and activity patterns of medium- and large-sized terrestrial mammals at the Los Tuxtlas Biosphere Reserve, México." Therya 12, no. 2 (2021): 237–48. http://dx.doi.org/10.12933/therya-21-1105.
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Studies on diversity of animal communities allow determination of their species richness and composition. This information is particularly relevant to establish sound conservation programs in biosphere reserves, where human activities should be focused on the sustainable use of natural resources and ensure biodiversity protection. This study estimated the diversity and species richness and determined the species composition and activity patterns of medium- and large-sized terrestrial mammals in the Los Tuxtlas Biosphere Reserve (LTBR) located in Veracruz, Mexico. We set 18 camera traps to record medium and large-sized terrestrial mammals from August 2016 to January 2017. We calculated the trapping rate, guilds, and activity patterns of species. Diversity was estimated with Hill numbers. We compared our estimates with other studies in tropical forest in Mexico. We obtained 308 independent captures of 13 species; Cuniculus paca and Dasyprocta mexicana were the species with the highest trapping rate. Order-0, order-1, and order-2 diversity values were 13.99, 6.50, and 4.75 effective species, respectively, which ranks LTBR the fourth-most diverse reserve of medium- and large-sized terrestrial mammals compared to six other tropical rainforest sites in southern Mexico. We recorded mammals representing five trophic guilds, of which frugivore-folivores (five species) and omnivores (three species) ranked highest. All recorded species were primarily nocturnal (six species) or diurnal (six species). Tamandua mexicana, Leopardus pardalis, L. wiedii, and Eira barbara are listed as endangered in the Mexican Official Standard Norm NOM-059-2019, and L. wiedii is listed as near threatened in the IUCN Red List of Threatened Species. We were able to record 40.6 % of the terrestrial mammal species known to inhabit the LTBR. The absence of large-sized species such as large predators and herbivores was notable. Comparison of medium and large-sized mammal diversity of camera trapping studies in Mexico show that landscape degradation is impoverishing terrestrial mammal communities.
Dissertations / Theses on the topic "Terrestrial mammal"
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Tuyisingize, Deogratias. "Terrestrial small mammal community composition in the Volcanoes National Park, Rwanda." Master's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/4763.
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Bussière, Elsa Marion Sylvie. "Camera traps as sensor networks for space-time exploration of terrestrial mammal communities." Doctoral thesis, Faculty of Science, 2018. http://hdl.handle.net/11427/30184.
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Most of the conservation issues which ecologists are called on to help resolve are essentially about ecological communities. Camera trapping technology has led to a surge in the collection of large ecological datasets, which provides an unmissable opportunity to attain deeper knowledge of animal community assembly and structure. Using extensive camera trap data, this thesis examines whether camera traps can be used as sensor networks for a space-time exploration of the terrestrial mammal community that occurs in the Little Karoo of South Africa. In Chapter 1, the species-habitat relationship along a ruggedness gradient was studied. Using resource selection functions and multivariate statistics, this chapter showed that the strength of affinities, which mammals developed with specific terrain roughness, varied among species. It also enabled the recognition of subtle and continuous nuances in the spectrum of habitat preferences, providing a novel tool to explore the forces driving species coexistence in local animal communities. The theme of Chapter 2 was to consider patterns of seasonal occurrence within species circadian rhythms. Using kernel density functions with descriptive and multivariate statistics, this chapter showed that most mammal species responded to the ecological variability brought about by seasonality by adjusting their diel activity rhythms between winter and summer, resulting in a reduction of time exposure to a physiologically stressful environment caused by high temperatures in summer. It also highlighted that while some shifts only result from photoperiodism alignment, most are driven by other factors too. Chapter 3 examined temporal-partitioning as a mechanism driving sympatry. Using kernel density functions and mutivariate statistical analyses, this chapter enabled subtle nuances in the spectrum of diel activity rhythms to be visualised, highlighting the variety of temporal niche breadths and of activity onset/offset timings, which allowed diel activity rhythms to diversify and the mammal community to partition the temporal resources. Finally, in Chapter 4, topics dealing with leopard habitat preferences and leopard population density were explored. Using spatially explicit capture-recapture models, this chapter showed that leopard density remained low but varied with topographic relief; it increased with ruggedness of the terrain up to an optimum, and followed a reversed trend as the terrain roughness kept increasing. The population was composed of two groups of individuals with significantly different home range sizes, potentially explained by gender duality in movement. The chapter provided leopard density estimates ranging from 0.49 to 0.82 individual per 100 km2 . Local communities, such as that of the mammal species of the Little Karoo, are neither closed nor isolated. Therefore, it would be insightful if future studies were to embrace the metacommunity concept and explain these patterns of species distribution, abundance and interaction at multiple scales of spatio-temporal organisation.
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Lyon, Rebecca J. "Occupancy of Terrestrial Mammal Species of the Madeira-Purus Interfluvium in Amazonas, Brazil." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/theses/2121.
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The Amazon represents more than half of the surviving tropical forest on Earth. However, despite its vast size and diversity, habitat loss is an increasing threat due to the growth of economic activities and infrastructure projects. Carnivores play an important role in reducing herbivore numbers through predation, thereby reducing the risk of over browsing and are particularly susceptible to habitat loss and fragmentation due to their large area requirements, low densities, and slow population growth. Altering herbivore communities via a change in carnivore density and habitat loss may change plant diversity by altering seed dispersal, and seed and seedling survival. The Madeira-Purus interfluvial plain in Brazil is a pristine and yet understudied part of the Amazon. I studied environmental factors affecting occupancy and detection of carnivores and herbivores in the Madeira-Purus interfluvial plain Amazonas state, Brazil. During 2010-12 remote cameras were used to investigate patterns of site occupancy and detection probabilities, as affected by habitat and anthropogenic influences, for several terrestrial mammal groups. Site occupancy and detection varied for all species groups across land protections types. Medium felids and peccaries showed a sharp decline in occupancy from unprotected lands to state-protected sites with the highest occupancy on the federally-protected site. Brocket deer increased in occupancy from unprotected to state-protected lands, and from state-protected to federally-protected lands. Large felid occupancy, however, was exactly the opposite, with the lowest occupancy at the federally-protected site. Species richness at camera sites was the most important covariate, positively influencing occupancy in all species groups. This helps inform wildlife management by providing suggestions to improve future occupancy studies and support for maintaining protected areas for the persistence of viable mammal populations. I found occupancy of many species groups (i.e. peccaries, medium felids and medium rodents) were lowest on state-protected land. Species richness was also lowest on state-protected land, implying a depletion of herbivore and carnivore species in that area, which may be due to local foraging and hunting of forest resources by humans. I recommend stricter laws and enforcement to limit the harvest of forest fruits and nuts and illegal hunting. Repaving local highways will likely increase human influence in these areas and increase pressure on forest resources.
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Tsubamoto, Takehisa. "The Pondaung mammal fauna : an analysis of a terrestrial mammal fauna in the latest middle Eocene of central Myanmar (Southeast Asia)." 京都大学 (Kyoto University), 2001. http://hdl.handle.net/2433/150841.
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Boyles, Esmarie. "Mammalian carnivores as bioindicators to evaluate the exposure and bioaccumulation of organic contaminants in terrestrial ecosystems." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/dissertations/1341.
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To address my first objective, I opportunistically collected road-killed bobcats (n=44) throughout Illinois during 2013-2014, and analyzed their liver tissue for the presence of PCBs, PBDEs, and various other alternative halogenated flame retardants. Concentrations of ∑PCBs ranged from 76.4 ng/g lw to 3782 ng/g lw (median 562.97 ng/g lw). Male bobcats had significantly higher concentrations of PCBs than females (p = 0.04). Concentrations of ∑PBDEs (including all detectable PBDE congeners) ranged from 8.3 to 1920 ng/g lipid weight (median: 50.3 ng/g lw). Among the alternative flame retardants screened, Dechloranes (including anti- and syn-Dechlorane Plus and Dechlorane-602, 603, and 604), tetrabromo-o-chlorotoluene (TBCT), and hexabromocyclododecane (HBCD) were also detected frequently, with median concentrations of 28.7, 5.2, and 11.8 ng/g lw, respectively. Dechlorane analogue compositions in bobcats were different from that reported in other studies, suggesting species- or analogue-dependent bioaccumulation, biomagnification, or metabolism of Dechlorane chemicals in different food webs. My findings, along with previously reported food web models, suggest Dechloranes may possess substantial bioaccumulation and biomagnification potencies in terrestrial mammalian food webs. Thus, attention should be given to these highly bioavailable flame retardants in future environmental biomonitoring and risk assessments in a post-PBDE era. To address my second objective I collected raccoons (n=32) from various sites across Illinois and Missouri during 2013-2015. Liver tissues were analyzed for the presence of PBDEs and Dechloranes. ∑PBDE concentrations ranged from 19.1 ng/g lw to 2124 ng/g lw (median = 98.0 ng/g lw) and did not differ between gender or age of raccoon. Although nonsignificant (p=0.06), adult raccoons appeared to have greater PBDE concentration loads compared to juveniles. These nonsignificant differences are likely due to large variation in contaminant concentrations, possibly reflecting differences in individual raccoon diet and behavior. This is the first study reporting bioaccumulation of halogenated flame retardants in a wild felid in North America, and also the first report of PBDE accumulation in North American raccoons. The wide detection of Dechloranes, HBCD and TBCT in bobcats suggests a broad exposure of these alternative flame retardants in terrestrial apex predators in terrestrial ecosystems. The comparatively high levels of PBDEs in raccoons also suggest that biota in terrestrial habitats are still widely exposed to and susceptible to the bioaccumulation of these flame retardants.
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Watanabe, Brett Kaoru. "Differences in Basal Metabolic Rates, Heart Masses, and Hematocrits of Bats, Terrestrial Mammals, and Birds." Scholarship @ Claremont, 2014. http://scholarship.claremont.edu/cmc_theses/836.
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Bats are the only mammals capable of powered flight. In flight, bats consume up to 20 times more oxygen per hour than under basal conditions. This is twice the increase reported for running mammals of the same body sizes. Birds are the only other group of vertebrate capable of powered flight. By plotting morphological and physiological parameters against body mass for bats, terrestrial mammals, and birds, we can observe to what extent these parameters permit high rates of oxygen delivery necessary for flight.
In this study we analyzed basal metabolic rate, heart mass, and hematocrit, and compared how differently they scale in the afore-mentioned groups. We found that larger heart masses are associated with the ability to fly; hematocrit values for birds change markedly with body size, while those for mammals and bats are nearly independent of body size; and that BMR scales differently in all three groups.
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Walker, Kevin R. "Climatic Dependence of Terrestrial Species Assemblage Structure." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/23697.
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An important goal of ecological studies is to identify and explain patterns or variation in species assemblages. Ecologists have discovered that global variation in the number of species in an assemblage relates strongly to climate, area, and topographic variability in terrestrial environments. Is the same true for other characteristics of species assemblages?
The focus of this thesis is to determine whether species assemblage structure, defined primarily as the body mass frequency distributions and species abundance distributions relate in convergent ways to a set of a few environmental variables across broad spatial scales.
First, I found that for mammals and trees most of their geographic variation across North and South America in assemblage structure is statistically related to temperature, precipitation, and habitat heterogeneity (e.g. different vegetation types) in convergent ways.
I then examined bird assemblages across islands and continents. Despite the evolutionary and ecological differences between island and continental assemblages, I found that much of the variation in bird assemblage structure depends on temperature, precipitation, land area, and island isolation in congruent patterns in continent and island bird assemblages.
Frank Preston modeled species richness based on the total number of individuals and the number of individuals of the rarest species. Building on Preston’s model, Chapter 2 hypothesized that gradients of diversity correlate with gradients in the number of individuals of the rarest species, which in turn are driven by gradients in temperature and precipitation. This hypothesis assumes that species abundance distributions relate to temperature and precipitation in similar ways anywhere in the world. I found that both the number of individuals of the rarest species (m) and the proportion of species represented by a single individual in samples of species assemblages (Φ) were strongly related to climate. Moreover, global variation in species richness was more strongly related to these measures of rarity than to climate. I propose that variation in the shape of the log-normal species abundance distribution is responsible for global gradients of species richness: rare species (reflected in m and Φ) persist better in benign climates.
Even though body mass frequency distributions of assemblages show convergent patterns in relation to a set of a few environmental variables, the question remains as to what processes are responsible for creating the geographical variation in the body-size distribution of species. Several mechanisms (e.g. heat conservation and resource availability hypotheses) have been proposed to explain this variation. Chapter 5 tested and found no empirical support for the predictions derived from each of these mechanisms; I showed that species of all sizes occur across the entire temperature gradient.
In conclusion, assemblage structure among various taxonomic groups across broad spatial scales relate in similar ways to a set of a few environmental variables, primarily mean annual temperature and mean annual precipitation. While the exact mechanisms are still unknown, I hypothesize several to explain the patterns of convergent assembly.
Résumé
Un but important de l'écologie est d'identifier et d'expliquer la variation de premier ordre dans les caractéristiques des assemblages d'espèces. Un des patrons ayant déjà été identifié par les écologistes, c'est que la variation mondiale de la richesse en espèces est liée à la variation du climat, de l'aire et de la topographie. Est-ce que d'autres caractéristiques des assemblages d'espèces peuvent être reliées à ces mêmes variables?
Le but de cette thèse est de déterminer si la structure des assemblages d'espèces, ici définie comme la distribution des fréquences de masse corporelle ainsi que la distribution d'abondances des espèces, est reliée de manière convergente à un petit ensemble de variables environnementales, et ce, partout dans le monde.
D'abord, j'ai déterminé que, pour les mammifères et les arbres, la majorité de la variation géographique dans la structure des assemblages d'espèces est reliée statistiquement à température, précipitation, et l’hétérogénéité du couvert végétal , et ce, de manière convergente pour l'Amérique du Nord et du Sud.
Je me suis ensuite penché sur l'assemblage des oiseaux sur les îles et les continents. Malgré les larges différences évolutives et écologiques qui distinguent les îles des continents, je démontre que la majorité de la variation dans la structure des assemblages d'oiseaux dépend de la température, la précipitation, la superficie et l’isolation de façon congruente sur les îles et les continents.
Frank Preston a modélisé la richesse en espèces d'une localité, basée sur le nombre total d'individus ainsi que le nombre d'individus de l’espèce la plus rare. En s'appuyant sur les modèles de Preston, Chapître 3 propose une nouvelle hypothèse voulant que les gradients de diversité dépendent des gradients du nombre d'individus de l’espèce la plus rare. Celle-ci dépend des gradients de température et de précipitation. Cette hypothèse repose sur le postulat que la distribution d’abondances des espèces dépend de la température et la précipitation, et ce, de la même manière n’importe où au monde. J’ai mis en évidence que le nombre d’individus de l’espèce la plus rare (m), ainsi que la proportion d’espèces représentées par un individu unique () dans des échantillons locaux étaient fortement reliés au climat. D’ailleurs, la variation globale de la richesse en espèces était plus fortement reliée à ces indices de rareté qu’au climat. Je propose que la variation dans la forme de la distribution log-normale d’abondances d’individus soit responsable des gradients mondiaux de richesse en espèces. En d’autres mots, les espèces rares (indiquées par m et ) persistent mieux dans des climats bénins.
Malgré que la distribution des fréquences de masse corporelle des assemblages d'espèces soit liée de manière convergente à seulement quelques variables environnementales, la question demeure à savoir quels processus sont responsables des gradients géographiques de variation en masse corporelle des espèces. Plusieurs mécanismes ont été proposés pour expliquer cette variation. Dans Chapitre 5, j'ai testé les prédictions dérivées de chacun de ces mécanismes sans trouver de support empirique pour aucun. Je démontre aussi que des espèces de toutes tailles se retrouvent sur le gradient de température en entier.
En conclusion, la structure des assemblages d'espèces, pour différents groupes taxonomiques et à travers le monde, est liée de façon similaire à un petit nombre de variables environnementales. Bien que les mécanismes soient encore inconnus, j'en propose plusieurs pouvant expliquer ces patrons d'assemblages convergents.
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Cavalcante, Santos Cyntia. "Terrestrial herbivorous mammals in a mosaic of Cerrado, Atlantic Forest, and land-use changes." Thesis, Angers, 2019. http://www.theses.fr/2019ANGE0057.
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Les « hotspots » de la biodiversité du Cerrado et des forêts atlantiques ont souffert des changements rapides d’utilisation du sol au cours des cinq dernières décennies, résultant en une fragmentation de l’habitat, l’invasion d’espèces exotiques et la perte de biodiversité. Les mammifères herbivores sont une communauté clé pour étudier les impacts des changements d’utilisation des sols, car ils sont directement influencés par la structure du paysage. Premièrement, nous avons examiné des articles publiés entre 2002 et 2018 sur les mammifères terrestres dans des contextes de changement d’utilisation du sol dans le Cerrado brésilien. Nous avons constaté que les réactions négatives des mammifères aux changements d'utilisation du sol étaient associées à l'agriculture, à l'élevage, aux routes et aux zones urbaines. De plus, nous identifions de grandes lacunes de connaissances. Deuxièmement, nous avons collecté des données sur la communauté de mammifères herbivores à travers les gradients de changements d'utilisation du sol sur le plateau de Bodoquena au Brésil entre février 2016 et décembre 2017. Nous analysions comment et à quelle échelle trois métriques du paysage (pourcentage de couverture forestière, densité de parcelles et densité de lisières) affectent l'occurrence de quatre espèces herbivores (Dasyprocta azarae, Pecari tajacu, Mazama gouazoubira et Tapirus terrestris). Nous avons trouvé des différences dans les échelles auxquelles les espèces ont répondu à différentes mesures du paysage. Enfin, nous avons modélisé l'occupation de 23 mammifères herbivores dans le paysage du plateau de Bodoquena. Le modèle d'occupation en fonction du couvert forestier a montré des réactions idiosyncratiques par espèce aux changements d'utilisation du sol. Par conséquent, nous recommandons des stratégies différentes et complémentaires, notamment la restauration de l'habitat, pour la protection et gestion des mammifères herbivores au plateau de Bodoquena<br>The Cerrado and Atlantic forest biodiversity hotspots have been experiencing rapid land-use changes in the last five decades resulting in habitat fragmentation, invasion of exotic species and biodiversity loss. Herbivore mammals are a key community to investigate the impacts of land-use changes on biodiversity, because they are directly influenced by the landscape structure. In a first step, we reviewed articles published between 2002 and 2018 about terrestrial mammals in contexts of land-use change in the Brazilian Cerrado. We found that negative responses of mammals to land-use changes were mainly associated with agriculture, livestock, roads and urban areas. Moreover, we identified big knowledge gaps, for example in the coverage of research areas or species. Secondly, we collected data on the community of herbivore mammals across gradients of land-use changes in the Bodoquena Plateau in Brazil between February 2016 and December 2017. We analyzed how and on which scale three landscape metrics (percentage of forest cover, patch density and edge density) affect the occurrence of four herbivore species (Dasyprocta azarae, Pecari tajacu, Mazama gouazoubira and Tapirus terrestris). We found differences in the scales at which the species responded to different landscape metrics. Finally, we modeled the occupancy of 23 herbivore mammals in the landscape of the Bodoquena Plateau. The pattern of occupancy as a function of forest cover percentage showed idiosyncratic responses per species to land-use changes. Therefore, we recommend different and complementary strategies including habitat restoration for conservation and management of herbivore mammals in the Bodoquena Plateau
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Mouta, Catarina Feliciano. "Spatiotemporal patterns of culvert use by terrestrial Mediterranean mammals." Master's thesis, Universidade de Évora, 2020. http://hdl.handle.net/10174/30088.
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Culvert flooding jeopardizes their use as safe crossing locations for animals, especially in locations with significative precipitation. The installation of elevated dry ledges inside culverts has been studied as a solution, although it is still not certain how effective they are. In order to tackle this problem, we tried to understand the under-road crossing patterns of mammals in culverts with and without ledges. We got enough data for six species, which showed carnivores had distinct preferences regarding culvert design and that culvert use was also dependent on environmental features surrounding it. Structure openness, distance to the nearest passage, water inside the culvert and season were the variables that most influenced crossing probabilities. Responses to these variables varied among species, highlighting the need for different type of structures that can fulfil each species’ necessities; RESUMO:
“Padrões espaciotemporais de uso de passagens hidráulicas por mamíferos mediterrânicos terrestres”
A inundação das passagens hidráulicas põe em risco o seu uso como locais de atravessamento seguro para os animais, especialmente em locais onde a precipitação é significativa. A instalação de passadiços elevados tem sido usada como solução, no entanto ainda não é conhecida com rigor a sua eficiência. Para tentar resolver este problema, estudámos os padrões de atravessamento por mamíferos em passagens com e sem passadiços. Apesar de só terem sido reunidos dados suficientes para seis espécies, determinámos que estes carnívoros têm preferências distintas quanto à estrutura da passagem e que o ambiente circundante também é um factor relevante no seu uso. A abertura das passagens, a distância entre elas, a quantidade de água e a estação foram as variáveis que mais influenciaram o uso. As respostas variaram entre espécies, mostrando a urgência de estruturas polivalentes que colmatem as necessidades de cada uma.
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Koep, Karin Sarah Coles. "Production of salami from meat of aquatic and terrestrial mammals." Thesis, Link to the online version, 2005. http://hdl.handle.net/10019/1073.
Full textBooks on the topic "Terrestrial mammal"
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Defler, Thomas. History of Terrestrial Mammals in South America. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-98449-0.
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Finley, Robert B. New records of terrestrial mammals in northwestern Colorado. Denver Museum of Natural History, 1995.
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Panyutina, Aleksandra A., Leonid P. Korzun, and Alexander N. Kuznetsov. Flight of Mammals: From Terrestrial Limbs to Wings. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-08756-6.
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Masseti, Marco. Atlas of terrestrial mammals of the Ionian and Aegean islands. De Gruyter, 2012.
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Debelica, Anica. Atlas and key to the hair of terrestrial Texas mammals. Museum of Texas Tech University, 2009.
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Johnson, Richard E. Terrestrial mammals of Washington State: Location data and predicted distributions. Washington Cooperative Fish and Wildlife Research Unit, University of Washington, 1997.
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Kennedy, Murray J. Synopsis of the parasites of vertebrates of Canada: Ectoparasites of terrestrial mammals. Alberta Agricuture, Animal Health Division, 1986.
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Kalisińska, Elżbieta, ed. Mammals and Birds as Bioindicators of Trace Element Contaminations in Terrestrial Environments. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-00121-6.
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Daniel, Milan. Mesostigmatid mites in nests of small terrestrial mammals and features of their environment. Academia, 1988.
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Sandro, Ruffo, and Stoch Fabio, eds. Checklist and distribution of the Italian fauna: 10,000 terrestrial and inland water species. Commune di Verona, 2006.
Find full textBook chapters on the topic "Terrestrial mammal"
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Judas, Jacky. "Terrestrial Mammals of the United Arab Emirates." In A Natural History of the Emirates. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-37397-8_14.
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AbstractThe United Arab Emirates (UAE) holds a fascinating mammalian diversity, highly adapted to its harsh arid environment. In total, 58 mammal species have been reported. Seven are now extinct, four are feral, and 10 are introduced non-native species. Of the 37 currently living native species, seven have been added to the national list in the past 15 years. More species likely await discovery, particularly among bats, the most diverse taxonomic group with 13 species reported for the UAE. Rodents, carnivores and ungulates are the three next most diverse groups. To cope with high temperatures and prolonged droughts, UAE mammals have developed a range of morphological, physiological and behavioural adaptations. However, they are not well adapted to face the numerous threats caused by human development. Except for a few species that benefit from urban expansion or conservation programmes, most are experiencing shrinking ranges and populations. Today, 20% of UAE native mammal species are classified as threatened globally, and 41% at the national level following IUCN red list criteria. National conservation programmes, and creation of new protected areas might contribute to improving their status along with increased scientific research efforts to fill the knowledge gaps on their status and ecology.
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Charlton, Benjamin D., Katarzyna Pisanski, Jordan Raine, and David Reby. "Coding of Static Information in Terrestrial Mammal Vocal Signals." In Coding Strategies in Vertebrate Acoustic Communication. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39200-0_5.
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Soria, Pablo Daniel Sauer, Rodolfo Vera Amaro, and Mario Eduardo Rivero Ángeles. "Energy Consumption Analysis of a WSN for Terrestrial Mammal Species Monitoring." In Communications in Computer and Information Science. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-77290-0_18.
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Žliobaitė, Indrė, Mikael Fortelius, Raymond L. Bernor, et al. "The NOW Database of Fossil Mammals." In Evolution of Cenozoic Land Mammal Faunas and Ecosystems. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-17491-9_3.
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AbstractNOW (New and Old Worlds) is a global database of fossil mammal occurrences, currently containing around 68,000 locality-species entries. The database spans the last 66 million years, with its primary focus on the last 23 million years. Whereas the database contains records from all continents, the main focus and coverage of the database historically has been on Eurasia. The database includes primarily, but not exclusively, terrestrial mammals. It covers a large part of the currently known mammalian fossil record, focusing on classical and actively researched fossil localities. The database is managed in collaboration with an international advisory board of experts. Rather than a static archive, it emphasizes the continuous integration of new knowledge of the community, data curation, and consistency of scientific interpretations. The database records species occurrences at localities worldwide, as well as ecological characteristics of fossil species, geological contexts of localities and more. The NOW database is primarily used for two purposes: (1) queries about occurrences of particular taxa, their characteristics and properties of localities in the spirit of an encyclopedia; and (2) large scale research and quantitative analyses of evolutionary processes, patterns, reconstructing past environments, as well as interpreting evolutionary contexts. The data are fully open, no logging in or community membership is necessary for using the data for any purpose.
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Reyna-Hurtado, Rafael, Georgina O’Farrill, Cuauhtémoc Chávez, Juan Carlos Serio-Silva, and Guillermo Castillo-Vela. "Large Terrestrial Mammals." In Biodiversity and Conservation of the Yucatán Peninsula. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-06529-8_10.
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Feist, D. D., and R. G. White. "Terrestrial Mammals in Cold." In Advances in Comparative and Environmental Physiology. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-74078-7_9.
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Kramer, Laura D., and Norma P. Tavakoli. "Viruses of Terrestrial Mammals." In Studies in Viral Ecology. John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118025710.ch11.
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Domning, Daryl P. "The Terrestrial Posture of Desmostylians." In Smithsonian Contributions to Paleobiology. Smithsonian Institution Press, 2002. http://dx.doi.org/10.5479/si.00810266.93.99.
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An attempt to reconstruct a skeleton of <i>Paleoparadoxia </i>Reinhart, 1959 (Mammalia, Desmostylia), suggests that desmostylian terrestrial posture deviated from that of typical ungulates much less than has been supposed by other authors. Desmostylians probably had a quadrupedal stance, with the body welt off the ground and the limbs more or less under the body; a strongly arched spine and steeply inclined pelvis; slightly abducted elbows and more strongly abducted knees; and a digitigrade foot posture with an extended but not hyperextended wrist and hyperextended toes, the front toes pointing anterolaterad and the hind toes pointing forward. Most peculiarities of the skeleton have parallels in certain large, slow-moving terrestrial mammals, such as ground sloths and chalicotheres. The desmostylian skeleton was apparently well suited to supporting the body’s weight on the hindquarters, perhaps while the animal clambered slowly over very uneven ground. This most likely occurred while it foraged for marine algae or sea grasses in rocky intertidal areas of the North Pacific shoreline, and while it crossed these areas en route to and from the water. Locomotion in the water probably resembled that of polar bears, with alternate pectoral paddling as the principal means of propulsion and the hind limbs used for steering. Surprisingly, desmostylian-like features of the tibia and ankle also are found in many other primitive ungulates and deserve closer study.
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Lara Díaz, Nalleli E., Jorge L. Reyes Díaz, Mircea G. Hidalgo Mihart, and Carlos A. López González. "Mexican Terrestrial Mammals in the Anthropocene." In Mexican Fauna in the Anthropocene. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-17277-9_10.
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Feer, François, Olivier Henry, Pierre-Michel Forget, and Marc Gayot. "Frugivory and Seed Dispersal by Terrestrial Mammals." In Nouragues. Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-015-9821-7_21.
Full textConference papers on the topic "Terrestrial mammal"
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Nistreanu, Victoria, Alina Larion, Viorica Paladi, Vladislav Caldari, and Vladimir Turcan. "Diversity of terrestrial vertebrate fauna in the sector Vulcănești - Colibași, Republic of Moldova." In Conferința științifică națională cu participare internațională "Integrare prin cercetare și inovare", dedicată Zilei Internaționale a Științei pentru Pace și Dezvoltare. Moldova State University, 2025. https://doi.org/10.59295/spd2024n.42.
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The research was carried out in the period 2021-2024 in natural and anthropogenic ecosystems of the sector. The purpose of the study was to evaluate the diversity of terrestrial vertebrate fauna and to highlight the importance of the sector for biodiversity conservation in the southern part of the republic. Species diversity of terrestrial vertebrates was assessed according to standard methods. The terrestrial vertebrate fauna was represented by 36 species of mammals, 64 species of birds, 6 amphibian species and 4 reptile species. 7 mammal species, 6 bird species one amphibian and 2 reptile species are listed in the Red Book of the Republic of Moldova. The most common and widespread species are the eurytopic ones with large limits of ecological valence.
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Bagnoli, Paola, Adriano Zaffora, Bruno Cozzi, Roberto Fumero, and Maria Laura Costantino. "Experimental and Computational Biomechanical Characterization of the Dolphin Tracheo-Bronchial Tree During Diving." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19078.
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Marine mammals belonging to the Order of CetoArtiodactyla have developed their organs and adapted their anatomic structures to survive and better exploit the resources of the surrounding water environment. Though belonging to the Mammal Class and, hence, having a cardio-respiratory system based on the gas exchange with the atmosphere, they are able to perform long-lasting immersions and reach considerable depths during diving [1]. On the other hand, the anatomy of the tracheo-bronchial structures of the Family Delfinidae differs from that of terrestrial mammals in the lack of muscular tissue in the posterior region and the irregular shape of the cartilaginous rings (Fig.1a-b-c) [1, 2]. So far, the behavior of dolphin respiratory system during diving is not yet fully understood, since they cannot be subjected to invasive analysis being endangered and protected species. Namely, it remains to ascertain whether the tracheo-bronchial tree collapses during diving or is kept open by the peculiar material properties, the anatomical structure and the presence of entrapped air. Aim of this work is to model the dolphin Tursiops truncatus’s tracheo-bronchial tree to study its behavior during diving by coupling experimental in vitro mechanical characterization of airways tissues to finite element computational analyses. Furthermore, we performed a comparison between the mechanical behavior of tracheo-bronchial trees of dolphins and that of the goat, a terrestrial mammal whose conformation of the upper airways is similar to the human, to highlight discrepancies due to the different habitats.
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Fraser, Danielle, Natalia Rybczynski, Marisa Gilbert, and Romain Palmgren. "POST-EOCENE TERRESTRIAL MAMMAL DISPERSAL VIA THE NORTH ATLANTIC." In GSA Connects 2023 Meeting in Pittsburgh, Pennsylvania. Geological Society of America, 2023. http://dx.doi.org/10.1130/abs/2023am-394022.
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Guzas, Emily L., Stephen E. Turner, Matthew Babina, Brandon Casper, Thomas N. Fetherston, and Joseph M. Ambrico. "Validation of a Surrogate Model for Marine Mammal Lung Dynamics Under Underwater Explosive Impulse." In ASME 2019 Verification and Validation Symposium. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/vvs2019-5143.
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Abstract Primary blast injury (PBI), which relates gross blast-related trauma or traces of injury in air-filled tissues or those tissues adjacent to air-filled regions (rupture/lesions, contusions, hemorrhaging), has been documented in a number of marine mammal species after blast exposure [1, 2, 3]. However, very little is known about marine mammal susceptibility to PBI except in rare cases of opportunistic studies. As a result, traditional techniques rely on analyses using small-scale terrestrial mammals as surrogates for large-scale marine mammals. For an In-house Laboratory Independent Research (ILIR) project sponsored by the Office of Naval Research (ONR), researchers at the Naval Undersea Warfare Center, Division Newport (NUWCDIVNPT), have undertaken a broad 3-year effort to integrate computational fluid-structure interaction techniques with marine mammal anatomical structure. The intent is to numerically simulate the dynamic response of a marine mammal thoracic cavity and air-filled lungs to shock loading, to enhance understanding of marine mammal lungs to shock loading in the underwater environment. In the absence of appropriate test data from live marine mammals, a crucial part of this work involves code validation to test data for a suitable surrogate test problem. This research employs a surrogate of an air-filled spherical membrane structure subjected to shock loading as a first order approximation to understanding marine mammal lung response to underwater explosions (UNDEX). This approach incrementally improves upon the currently used one-dimensional spherical air bubble approximation to marine mammal lung response by providing an encapsulating boundary for the air. The encapsulating structure is membranous, with minimal simplified representation not accounting for marine mammal species-specific and individual animal differences in tissue composition, rib mechanics, and mechanical properties of interior lung tissue. NUWCDIVNPT partnered with the Naval Submarine Medical Research Laboratory (NSMRL) to design and execute a set of experiments to investigate the shock response of an air-filled rubber dodgeball in a shallow underwater environment. These tests took place in the 2.13 m (7-ft) diameter pressure tank at the University of Rhode Island, with test measurements including pressure data and digital image correlation (DIC) data captured with high-speed cameras in a stereo setup. The authors developed 3-dimensional computational models of the dodgeball experiments using Dynamic System Mechanics Advanced Simulation (DYSMAS), a Navy fluid-structure interaction code. DYSMAS models of a variety of different problems involving submerged pressure vessel structures responding to hydrostatic and/or UNDEX loading have been validated against test data [4]. Proper validation of fluid structure interaction simulations is quite challenging, requiring measurements in both the fluid and structure domains. This paper details the development of metrics for comparison between test measurements and simulation results, with a discussion of potential sources of uncertainty.
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Nistreanu, Victoria, Vladimir Turcan, Alina Larion, Vladislav Caldari, Natalia Dibolscaia, and Silvia Ursul. "Terrestrial vertebrate fauna of the landscape reserve „La castel” from the northern part of the Republic of Moldova." In Xth International Conference of Zoologists. Institute of Zoology, Republic of Moldova, 2021. http://dx.doi.org/10.53937/icz10.2021.56.
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The studies were performed in the period 2015-2021 in various ecosystems of the Landscape Reserve „La Castel” from the northern part of the Republic of Moldova. The amphibian are represented by 11 species of the orders Urodela and Anura. Among reptiles 8 species from two orders have been identified: Testudines with one species and Squamata with 7 species. 11 species of herpethofauna are listed in the Red Book of Moldova. The ornithofauna was represented by over 120 species and is dominated by the silvicolous species. Four bird species are listed in the Red Book of Moldova. The mammal fauna includes 45 species, of which 13 are listed in the Red Book of Moldova. A large maternity colony of Myotis blythii was monitored during the last years. The Reserve „La Castel” represent an important scientific site and the studies will continue.
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Formoso, Kiersten. "COMPARING DEGREE OF MORPHOLOGICAL CHANGE ACROSS MARINE MAMMAL AND REPTILE GROUPS: INVESTIGATING THE INFLUENCE OF ANCESTRAL TERRESTRIAL ANATOMY ON THE LAND-TO-SEA TRANSITION." In GSA Connects 2021 in Portland, Oregon. Geological Society of America, 2021. http://dx.doi.org/10.1130/abs/2021am-367335.
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Chemirskaya, D. S. "Methodology for using camera traps to study the northern pika using the example of the Zeya Nature Reserve (Amur Region)." In Современные проблемы регионального развития. ИКАРП ДВО РАН, 2024. http://dx.doi.org/10.31433/978-5-904121-41-9-2024-94-97.
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The features of working with camera traps in the Zeya Nature Reserve when studying natural objects are described. We determined the population density of the northern pika, behavioral characteristics, and collected statistical information. A technique was used to quantify the number of large and medium-sized terrestrial mammals using camera traps, developed by S.A. Podolsky. and Kastrikin V.A. The technique is applicable for different types of camera traps. We used the Browning Recon force Advantage model, the high response speed of which allows us to apply this technique to small mammals.
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Ahrens, Andrea, Jeffrey Green, Paul Anderson, and Linda Postlewaite. "Why Marine Mammals Matter to Your Terrestrial Export Pipeline Project." In 2014 10th International Pipeline Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/ipc2014-33752.
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Increases in export pipeline development can result in a corresponding increase in marine transportation activities and the potential to escalate adverse interactions with marine wildlife. Ship traffic introduces risks of vessel strikes as well as the amount of underwater noise produced in the marine environment. Growing public and scientific concern over the potential effects of increasing ship traffic on marine wildlife mean that even terrestrially-based pipeline projects need to start considering the effects of shipping in developing environmental mitigation programs for their export operations. Northern Gateway is proposing to construct and operate twin pipelines between Alberta and British Columbia, and an associated tank and marine terminal for export operations. While Northern Gateway will not own or operate any of the tankers, they have committed to implementing a comprehensive marine mitigation, monitoring and research program, including measures to reduce ship strikes and effects of underwater noise on marine mammals. Vessel strikes can cause severe or fatal injuries. Higher relative risk exists where shipping traffic overlaps with increased densities of marine mammals. Vessel speed has been positively correlated with the degree of risk and injury; consequently, Northern Gateway has set maximum year-round speed restrictions of 10–12 knots for all Project-related tankers calling at the marine terminal, with further restrictions of 8–10 knots in key areas. Other large vessels in this region currently travel at speeds of 16–21 knots. Mandatory speed restrictions will also reduce the Project’s contribution to underwater noise. Effects of underwater noise on marine mammals include temporary habitat avoidance, reduced feeding efficiency, behavioural change, increased stress, and communication masking. Acoustic modeling conducted for the project predicted that reducing vessel speeds from 15 to 9.6 knots would decrease underwater noise input by nearly 12 dB, making the zone of ensonification 2–3 times smaller than in the absence of mitigations. Purpose-built escort tugs will use best commercially-available noise-quieting technology and speed restriction areas will be refined through six-years of surveys and a quantitative vessel strike analysis. Vessel traffic is not unique to Northern Gateway; however, through minimizing their incremental contribution, they hope to serve as an industry example. This approach to minimizing effects of routine marine export operations is unique in the shipping industry in Canada and the United States. If other proponents were to adopt similar types of measures, Northern Gateway believes that the marine environment would see some net benefits in terms of a reduction in adverse effects on marine mammals.
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ALKON, PU. "DEVELOPING ACOUSTIC TELEMETRY SYSTEMS FOR TERRESTRIAL MAMMALS: A BRIEF HISTORY." In BIOACOUSTICS 2007. Institute of Acoustics, 2023. http://dx.doi.org/10.25144/17761.
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Polaina, Ester, Manuela Gonzalez-Suarez, and Eloy Revilla. "Trajectory analyses of past human land use as a tool to understand present terrestrial mammals' distribution." In 5th European Congress of Conservation Biology. Jyvaskyla University Open Science Centre, 2018. http://dx.doi.org/10.17011/conference/eccb2018/107544.
Full textReports on the topic "Terrestrial mammal"
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Huijser, M. P., Robert J. Ament, M. Bell, et al. Animal Vehicle Collision Reduction and Habitat Connectivity Pooled Fund Study – Literature Review. Nevada Department of Transportation, 2021. http://dx.doi.org/10.15788/ndot2021.12.
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This report contains a summary of past research and new knowledge about the effectiveness of mitigation measures aimed at reducing animal-vehicle collisions and at providing safe crossing opportunities for wildlife. The measures are aimed at terrestrial large bodied wild mammal species, free roaming large livestock species (e.g. cattle, horses), free roaming large feral species (e.g. “wild” horses and burros), and small animal species (amphibians, reptiles, and small mammals). While mitigation is common, it is best to follow a three-step approach: avoidance, mitigation, and compensation or “off-site” mitigation. If reducing collisions with large wild mammals is the only objective, the most effective measures include roadside animal detection systems, wildlife culling, wildlife relocation, anti-fertility treatments, wildlife barriers (fences),and wildlife fences in combination with wildlife crossing structures. If the objectives also include maintaining or improving connectivity for large wild mammals, then wildlife barriers (fences) in combination with wildlife crossing structures are most effective. Measures for large domestic mammal species are largely similar, though for free roaming livestock there are legal, moral and ethical issues. For small animal species, temporary or permanent road closure and road removal are sometimes implemented, but barriers in combination with crossing structures are the most common.
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Huijser, Marcel, E. R. Fairbank, and K. S. Paul. Best Practices Manual to Reduce Animal-Vehicle Collisions and Provide Habitat Connectivity for Wildlife. Nevada Department of Transportation, 2022. http://dx.doi.org/10.15788/ndot2022.2.
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The goal for this manual is to provide practical information for the implementation of mitigation measures that aim to: 1. Improve human safety through reducing collisions with large animals, including large wild mammal species, select free roaming large feral species, and select free roaming large livestock species, and 2. Improve or maintain habitat connectivity for terrestrial wildlife species and selected feral species through safe crossing opportunities. This manual does not include all possible measures that can or may reduce animal-vehicle collisions and maintain or improve habitat connectivity for wildlife. The measures included in this manual are: Barriers (fences) in combination with crossing structures (for large wild mammals and for small wild animal species), roadside animal detection system, Barriers (fences), Barriers (fences) in combination with crossing structures (for free roaming livestock), and culling, relocation, anti-fertility treatment, roadside animal detection systems, barriers (fences), and barriers (fences) in combination with crossing structures (for large feral mammal species such as feral horses and burros).
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Fahlman, Andreas, Peter L. Tyack, and Richard Mahon. Allometric Scaling of Decompression Sickness Risk in Terrestrial Mammals. Defense Technical Information Center, 2011. http://dx.doi.org/10.21236/ada552429.
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Tran, Tut, Alexandra Bonham, Justin Tweet, and Vincent Santucci. Bryce Canyon National Park: Paleontological resource inventory. National Park Service, 2024. http://dx.doi.org/10.36967/2302804.
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Originally designated as a national monument in 1923, Bryce Canyon National Park (BRCA) is recognized for its exceptional pink-orange hoodoo landscapes. Its iconic hoodoos, consisting of the Paleocene?Eocene Claron Formation, are only part of the geology of BRCA, which includes a nearly uninterrupted sequence of Late Cretaceous Western Interior Seaway evolution and diverse depositional environments from approximately 100 to 77 million years ago. This sequence consists of the coastal Naturita Formation, the marine Tropic Shale, the transitional Straight Cliffs Formation, and the terrestrial Wahweap Formation. These strata, and the Claron Formation, preserve diverse paleontological resources. Fossils at BRCA have received little visibility for most of the park?s history, despite relatively rapid advances in the study of Late Cretaceous and Paleogene paleontology in neighboring public lands, especially Grand Staircase-Escalante National Monument (GSENM) to the east. The best documentation of paleontological resources at BRCA was produced through concerted field inventory of the park conducted by Dr. Jeff Eaton and several cohorts of interns and students from 1988 to 2015. In that time, Eaton?s team documented nearly 200 paleontological localities within the park that yielded clams, snails, fish, frogs, turtles, lizards, snakes, crocodilians, dinosaurs, and mammals from the Straight Cliffs and Wahweap Formations and invertebrates, plants, and trace fossils in the Claron Formation. Eaton?s survey resulted in several publications, including the description of new microvertebrate species from the Straight Cliffs and Wahweap Formations. Despite this body of work, the park did not develop an internal paleontological resources management program. A new paleontological resources program at BRCA was advanced in response to construction activities that impacted several fossil localities in the Wahweap Formation. Newly hired paleontological staff conducted two seasons of field inventory (2022?2023), relocating as many of Eaton?s sites as possible and recording new fossil occurrences along the way. In this timeframe, BRCA paleontologists encountered more than 150 localities. They also conducted detailed literature review, examined the park?s paleontological collections data, and cultivated partnerships with outside researchers to better comprehend the current state and future potential of the park?s paleontological resources. This document synthesizes the total current body of knowledge on paleontological resources at BRCA to create a comprehensive paleontological inventory report. It combines historical data from the scientific literature, previous work conducted in the park, and recent fieldwork to cover BRCA?s geologic history and fossil diversity and the history of paleontological study, education, and resources management in the park.
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Tran, Tut, Alexandra Bonham, Justin Tweet, and Vincent Santucci. Bryce Canyon National Park: Paleontological resource inventory (public version). National Park Service, 2024. http://dx.doi.org/10.36967/2303710.
Full textAbstract:
Originally designated as a national monument in 1923, Bryce Canyon National Park (BRCA) is recognized for its exceptional pink-orange hoodoo landscapes. Its iconic hoodoos, consisting of the Paleocene?Eocene Claron Formation, are only part of the geology of BRCA, which includes a nearly uninterrupted sequence of Late Cretaceous Western Interior Seaway evolution and diverse depositional environments from approximately 100 to 77 million years ago. This sequence consists of the coastal Naturita Formation, the marine Tropic Shale, the transitional Straight Cliffs Formation, and the terrestrial Wahweap Formation. These strata, and the Claron Formation, preserve diverse paleontological resources. Fossils at BRCA have received little visibility for most of the park?s history, despite relatively rapid advances in the study of Late Cretaceous and Paleogene paleontology in neighboring public lands, especially Grand Staircase-Escalante National Monument (GSENM) to the east. The best documentation of paleontological resources at BRCA was produced through concerted field inventory of the park conducted by Dr. Jeff Eaton and several cohorts of interns and students from 1988 to 2015. In that time, Eaton?s team documented nearly 200 paleontological localities within the park that yielded clams, snails, fish, frogs, turtles, lizards, snakes, crocodilians, dinosaurs, and mammals from the Straight Cliffs and Wahweap Formations and invertebrates, plants, and trace fossils in the Claron Formation. Eaton?s survey resulted in several publications, including the description of new microvertebrate species from the Straight Cliffs and Wahweap Formations. Despite this body of work, the park did not develop an internal paleontological resources management program. A new paleontological resources program at BRCA was advanced in response to construction activities that impacted several fossil localities in the Wahweap Formation. Newly hired paleontological staff conducted two seasons of field inventory (2022?2023), relocating as many of Eaton?s sites as possible and recording new fossil occurrences along the way. In this timeframe, BRCA paleontologists encountered more than 150 localities. They also conducted detailed literature review, examined the park?s paleontological collections data, and cultivated partnerships with outside researchers to better comprehend the current state and future potential of the park?s paleontological resources. This document synthesizes the total current body of knowledge on paleontological resources at BRCA to create a comprehensive paleontological inventory report. It combines historical data from the scientific literature, previous work conducted in the park, and recent fieldwork to cover BRCA?s geologic history and fossil diversity and the history of paleontological study, education, and resources management in the park.