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Journal articles on the topic 'Ephemeral habitat'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Dexter, Nick. "The influence of pasture distribution and temperature on habitat selection by feral pigs in a semi-arid environment." Wildlife Research 25, no. 5 (1998): 547. http://dx.doi.org/10.1071/wr97119.

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The two parameters believed to influence habitat utilisation by feral pigs and wild boar (Sus scrofa) are protection from high temperatures and distribution of food. However, whether there is an interaction between these parameters is unknown. To examine the influence of high temperature on habitat utilisation, the use of four rangeland habitats (shrubland, woodland, riverine woodland, and ephemeral swamps) by feral pigs in north-west New South Wales, Australia, was measured by radio-telemetry during and after a drought. In each habitat, protection from high temperature was indexed once by vegetation cover, at three strata, while over the course of the study, food distribution was indexed by estimating pasture biomass in each habitat. Riverine woodland provided the most shelter from high temperature, followed by woodland, shrubland and ephemeral swamps. On average, ephemeral swamps had the highest pasture biomass, followed by riverine woodland, shrubland and woodland. The amount of pasture in each habitat increased after the drought but changed at different rates. During autumn, spring and summer feral pigs preferred riverine woodland but in winter shrubland was preferred. Multivariate regression indicated that habitat utilisation was significantly influenced by pasture biomass in shrubland and mean maximum temperature in the study area. The results suggest that feral pigs are restricted by high temperatures to more shady habitats during hot weather but when the constraint of high temperature is relaxed they distribute themselves more according to the availability of food.

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Wassens, Skye, Robyn J. Watts, Amy Jansen, and David Roshier. "Movement patterns of southern bell frogs (Litoria raniformis) in response to flooding." Wildlife Research 35, no. 1 (2008): 50. http://dx.doi.org/10.1071/wr07095.

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Within the semiarid regions of New South Wales, Australia, the endangered southern bell frog (Litoria raniformis) occupies a landscape that is characterised by unpredictable rainfall and periodic flooding. Limited knowledge of the movement and habitat-occupancy patterns of this species in response to flood events has hampered conservation efforts. We used radio-tracking to assess changes in movement patterns and habitat occupancy of L. raniformis (n = 40) over three different periods (November, January and April/May) that coincided with the flooding, full capacity and subsequent drying of waterbodies within an irrigation landscape. We assessed (1) the use of permanent and ephemeral habitats in response to flooding and drying and (2) distances moved, turning angles and dispersion of frogs during wetland flooding, full capacity and drying. Individuals remained in permanent waterbodies in November but had abandoned these areas in favour of flooded ephemeral waterbodies by January. As the ephemeral waterbodies dried, radio-tracked individuals moved back into permanent waterbodies. The movement patterns of radio-tracked individuals were significantly different in the three radio-tracking periods, but did not differ significantly between sexes. Individuals moved significantly greater distances over 24 h, in straighter lines and movements were more dispersed while they occupied ephemeral waterbodies during January than when they occupied permanent waterbodies during November and April/May. Local weather conditions did not influence movement patterns when all three tracking periods were modelled together using a single linear stepwise regression. The dynamic distribution of habitat patches over space and time, combined with changing patterns of resource utilisation and movement of L. raniformis, highlights the importance of incorporating both permanent and ephemeral habitat patches into conservation plans. Reductions in flood frequency and extent of ephemeral wetlands due to modified flooding regimes have the capacity to limit dispersal of this species, even when permanent waterbodies remain unchanged.

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Kendrick, Michael R., and Alexander D. Huryn. "Ephemeral wetlands as significant habitat for threatened crayfish in Alabama, USA." Freshwater Crayfish 21, no. 1 (2015): 147–52. http://dx.doi.org/10.5869/fc.2015.v21-1.147.

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Abstract While ephemeral wetlands contribute significantly to regional freshwater biodiversity, their role in supporting threatened and imperiled species of crayfish is not widely recognized. As the center of global crayfish biodiversity, the southeastern United States (US), and the state of Alabama (AL) in particular, are important focal areas where information is needed to develop understanding of habitat constraints determining the distributions of crayfish species. To this end, we documented crayfish species associated with ephemeral wetlands and associated wetland habitats that have been traditionally under sampled. Fifteen species of crayfish were documented among 96 survey sites. This assemblage included three Alabama state-listed Priority 1 species [Cambarellus diminutus Hobbs, Fallicambarus burrisi Fitzpatrick, Procambarus viaeviridis (Faxon)] and five Priority 2 species [Hobbseus prominens (Hobbs), Orconectes lancifer (Hagan), Procambarus evermanni (Faxon), P. leconti (Hagan), P. marthae Hobbs]. An undescribed species of Cambarellus (“sp. A”) was also documented, and will presumably be eventually designated a Priority 1 species in Alabama due to its restricted distribution and apparent endemism. Ten species of crayfish were documented from ephemeral wetlands, including four Priority 1 and 2 species [Cambarellus sp. A (presumed Priority 1 species), H. prominens, P. marthae, P. viaeviridis]. Most populations of Priority 1 and 2 species we documented are within the 100-year floodplain of the Black Warrior River. Ephemeral wetlands and associated wetland habitats within the floodplains of large rivers thus appear to be vital habitat for threatened and imperiled crayfish in Alabama. Our results suggest that future crayfish surveys should include sampling of these important but often overlooked habitats.

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Oh, Dogeun, Yongsu Kim, Sohee Yoo, and Changku Kang. "Habitat ephemerality affects the evolution of contrasting growth strategies and cannibalism in anuran larvae." PeerJ 9 (September 13, 2021): e12172. http://dx.doi.org/10.7717/peerj.12172.

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Ephemeral streams are challenging environments for tadpoles; thus, adaptive features that increase the survival of these larvae should be favored by natural selection. In this study, we compared the adaptive growth strategies of Bombina orientalis (the oriental fire-bellied toad) tadpoles from ephemeral streams with those of such tadpoles from non-ephemeral streams. Using a common garden experiment, we tested the interactive effects of location (ephemeral vs. non-ephemeral), food availability, and growing density on larval period, weight at metamorphosis, and cannibalism. We found that tadpoles from ephemeral streams underwent a shorter larval period compared with those from non-ephemeral streams but that this difference was contingent on food availability. The observed faster growth is likely to be an adaptive response because tadpoles in ephemeral streams experience more biotic/abiotic stressors, such as desiccation risk and limited resources, compared with those in non-ephemeral streams, with their earlier metamorphosis potentially resulting in survival benefits. As a trade-off for their faster growth, tadpoles from ephemeral streams generally had a lower body weight at metamorphosis compared with those from non-ephemeral streams. We also found lower cannibalism rates among tadpoles from ephemeral streams, which can be attributed to the indirect fitness costs of cannibalizing their kin. Our study demonstrates how ephemeral habitats have affected the evolutionary change in cannibalistic behaviors in anurans and provides additional evidence that natural selection has mediated the evolution of growth strategies of tadpoles in ephemeral streams.

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Gili, Josep-Maria. "Towards a transitory or ephemeral key habitat concept." Trends in Ecology & Evolution 17, no. 10 (2002): 453. http://dx.doi.org/10.1016/s0169-5347(02)02606-x.

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Smith, Michael A., J. Daniel Rodgers, Jerrold L. Dodd, and Quentin D. Skinner. "Habitat Selection by Cattle along an Ephemeral Channel." Journal of Range Management 45, no. 4 (1992): 385. http://dx.doi.org/10.2307/4003088.

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Peterson, Mark S., and Michael J. Andres. "Progress on Research Regarding Ecology and Biodiversity of Coastal Fisheries and Nektonic Species and Their Habitats within Coastal Landscapes." Diversity 13, no. 4 (2021): 168. http://dx.doi.org/10.3390/d13040168.

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This paper aims to highlight the new research and significant advances in our understanding of links between coastal habitat quality/quantity/diversity and the diversity of fisheries species and other mobile aquatic species (hereafter nekton) that use them within coastal landscapes. This topic is quite diverse owing to the myriad of habitat types found in coastal marine waters and the variety of life history strategies fisheries species and nekton use in these environments. Thus, we focus our review on five selective but relevant topics, habitat templates, essential fish habitat, habitat mosaics/habitat connectivity, transitory/ephemeral habitat, and the emerging/maturing approaches to the study of fish-habitat systems as a roadmap to its development. We have highlighted selected important contributions in the progress made on each topic to better identify and quantify landscape scale interactions between living biota and structured habitats set within a dynamic landscape.

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Arabhi, Pathiyil, and Maya Chandrasekharan Nair. "Seasonal vegetation shift and wetland dynamics in vulnerable granitic rocky outcrops of Palghat Gap of southern Western Ghats, Kerala, India." Journal of Threatened Taxa 11, no. 12 (2019): 14518–26. http://dx.doi.org/10.11609/jott.4732.11.12.14518-14526.

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Low altitude granitic hillock systems prevalent in Palghat (Palakkad) Gap region of southern Western Ghats were analyzed for seasonal dynamics in wetland taxa associated with marshy ephemeral flush vegetation, small ephemeral pools and deep rock pools. Due to characteristic habitat features, such systems harbor a unique pattern of microhabitats and associated floristic components. Wet phase in rocky outcrops in the monsoon season establishes a hydro-geomorphic habitat that supports establishment of wetland taxa like Eriocaulon, Drosera, Utricularia, Dopatrium, and Rotala. Seasonal shift in the floral associations was evident in tune with wetland dynamics. Wet rocks support ephemeral flush vegetation which display some unique plant associations of species of Eriocaulon, Utricularia, Drosera, Cyanotis, Murdannia, and Lindernia. Small ephemeral pools displayed taxa like Rotala malampuzhensis R.V. Nair, Dopatrium junceum (Roxb.) Buch.-Ham. ex Benth., D. nudicaule (Willd.) Benth., Monochoria vaginalis (Burm.f.) C. Presl, and Cyperus iria L. Rocky pools are the habitats of aquatic angiosperms like Nymphaea nouchali Burm. f., Ludwigia adscendens (L.) H. Hara, Utricularia aurea Lour. and Hydrilla verticillata (L.f.) Royle. The study documented 121 plant taxa from 37 families during a wet phase from rocky outcrops of the study area. Gradual shift in vegetation is evident as water recedes from granitic hillocks. During the period from December to March, the rocky pools dry up which results in a shift in the vegetation pattern where Poaceae members form the dominant elements. As most of the rocky outcrops are exposed to extreme temperature and acute water shortage, the taxa inhabiting such ecosystems tend to evolve much faster than in other habitats. Moreover, the vicinity of these hillocks in the Palghat Gap region to human settlements, face threats like fire, grazing, quarrying, dumping of wastes etc. which may cause considerable loss to the very sensitive plant communities which are not yet fully documented.

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VAN GEEST, ALFRED, and PETER COESEL. "Some new and interesting desmids (Streptophyta, Desmidiales) from ephemeral puddles in the urban and industrial areas of Amsterdam (Netherlands)." Phytotaxa 387, no. 2 (2019): 119–28. http://dx.doi.org/10.11646/phytotaxa.387.2.4.

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From ephemeral puddles in the urban and industrial areas of Amsterdam (Netherlands) four new species are described: Cosmarium amstelodamense, C. galeatum, C. fruticosum and C. scutiforme. In addition, three previously described species causing much taxonomic confusion, viz. C. notabile, C. rostafinskii and C. benedictum, are reconsidered. Ephemeral puddles as potential habitat of rarely observed desmid taxa are briefly reviewed.

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Folk, Travis Hayes, and Gary R. Hepp. "Effects of Habitat use and Movement Patterns on Incubation Behavior of Female Wood Ducks (Aix Sponsa) in Southeast Alabama." Auk 120, no. 4 (2003): 1159–67. http://dx.doi.org/10.1093/auk/120.4.1159.

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Abstract We examined effects of movement patterns and habitat use of female Wood Ducks (Aix sponsa) during incubation on incubation constancy and recess frequency. Incubating females (n = 41) were equipped with subcutaneous radiotransmitters and subsequently located during daily recess events. Using compositional analysis, we determined beaver ponds, creeks, ephemeral wetlands, and lake-influenced habitats ranked higher in preference than other available aquatic habitats (i.e. managed impoundments, farm pond, and lake habitats). An inverse relationship between female use of the top four ranked habitats and recess range size suggested that those were high-quality habitats. Mean (±SE) incubation constancy (n = 40 nests) was 81.3 ± 0.8%, and females took an average of 2.2 ± 0.3 recesses day−1. Incubation period averaged 31.8 ± 0.3 days, and there was a weak inverse relationship between incubation period and incubation constancy. Incubating females lost 3.9 ± 0.8% of early incubation body mass, but body-mass changes were not associated with use of preferred habitats (i.e. beaver ponds, creeks, ephemeral wetlands, and lake-influenced areas). Initiation date of incubation and percentage use of preferred habitats were the most important variables describing variation in incubation constancy. Constancy declined later in the breeding season and with increased use of preferred habitats. Recess frequency decreased with increasing variation in distances that females traveled from the nest. Wood Ducks nesting at southern latitudes generally are not energetically constrained during incubation, and nest attentiveness is only weakly associated with incubation period. We would expect stronger relationships between habitat use, body-mass dynamics, and incubation behavior under environmental conditions that are more severe or less predictable.

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Hartman, G. F., and T. G. Brown. "Forestry-Fisheries Planning Considerations on Coastal Floodplains." Forestry Chronicle 64, no. 1 (1988): 47–51. http://dx.doi.org/10.5558/tfc64047-1.

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Minor drainages (ephemeral swamps and intermittent tributaries) located on coastal floodplains are utilized by trout (Salmo sp.) and juvenile coho (Oncorhynchus kisutch) as over-wintering habitat. This paper describes salmonid habitat associated with these minor drainages, lists the possible impacts of forestry activities on this habitat, and discusses various measures that may be taken to protect these areas. The importance of careful surveys to identify and evaluate potential over-wintering habitat, prior to logging planning, is emphasized.

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Letourneau, Deborah K., Sara G. Bothwell Allen, and John O. Stireman. "Perennial habitat fragments, parasitoid diversity and parasitism in ephemeral crops." Journal of Applied Ecology 49, no. 6 (2012): 1405–16. http://dx.doi.org/10.1111/1365-2664.12001.

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Topping, C. J., and K. D. Sunderland. "Population dynamics and dispersal of Lepthyphantes tenuis in an ephemeral habitat." Entomologia Experimentalis et Applicata 87, no. 1 (1998): 29–41. http://dx.doi.org/10.1046/j.1570-7458.1998.00301.x.

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Dickey-Collas, Mark, Abigail McQuatters-Gollop, Eileen Bresnan, et al. "Pelagic habitat: exploring the concept of good environmental status." ICES Journal of Marine Science 74, no. 9 (2017): 2333–41. http://dx.doi.org/10.1093/icesjms/fsx158.

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Abstract Marine environmental legislation is increasingly expressing a need to consider the quality of pelagic habitats. This paper uses the European Union marine strategy framework to explore the concept of good environmental status (GES) of pelagic habitat with the aim to build a wider understanding of the issue. Pelagic ecosystems have static, persistent and ephemeral features, with manageable human activities primarily impacting the persistent features. The paper explores defining the meaning of “good”, setting boundaries to assess pelagic habitat and the challenges of considering habitat biodiversity in a moving medium. It concludes that for pelagic habitats to be in GES and able to provide goods and services to humans, three conditions should be met: (i) all species present under current environmental conditions should be able to find the pelagic habitats essential to close their life cycles; (ii) biogeochemical regulation is maintained at normal levels; (iii) critical physical dynamics and movements of biota and water masses at multiple scales are not obstructed. Reference points for acceptable levels of each condition and how these may change over time in line with prevailing oceanographic conditions, should be discussed by knowledge brokers, managers and stakeholders. Managers should think about a habitat hydrography rather than a habitat geography. Setting the bounds of the habitats requires a consideration of dimension, scale and gradients. It is likely that to deal with the challenges caused by a dynamic environment and the relevance of differing spatial and temporal scales, we will need to integrate multidisciplinary empirical data sets with spatial and temporal models to assess and monitor progress towards, or displacement from GES of the pelagic habitat.

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Neupane, Swatantra, and Sen Xu. "Adaptive Divergence of Meiotic Recombination Rate in Ecological Speciation." Genome Biology and Evolution 12, no. 10 (2020): 1869–81. http://dx.doi.org/10.1093/gbe/evaa182.

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Abstract Theories predict that directional selection during adaptation to a novel habitat results in elevated meiotic recombination rate. Yet the lack of population-level recombination rate data leaves this hypothesis untested in natural populations. Here, we examine the population-level recombination rate variation in two incipient ecological species, the microcrustacean Daphnia pulex (an ephemeral-pond species) and Daphnia pulicaria (a permanent-lake species). The divergence of D. pulicaria from D. pulex involved habitat shifts from pond to lake habitats as well as strong local adaptation due to directional selection. Using a novel single-sperm genotyping approach, we estimated the male-specific recombination rate of two linkage groups in multiple populations of each species in common garden experiments and identified a significantly elevated recombination rate in D. pulicaria. Most importantly, population genetic analyses show that the divergence in recombination rate between these two species is most likely due to divergent selection in distinct ecological habitats rather than neutral evolution.

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Lertzman-Lepofsky, Gavia, Arne Ø. Mooers, and Dan A. Greenberg. "Ecological constraints associated with genome size across salamander lineages." Proceedings of the Royal Society B: Biological Sciences 286, no. 1911 (2019): 20191780. http://dx.doi.org/10.1098/rspb.2019.1780.

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Salamanders have some of the largest, and most variable, genome sizes among the vertebrates. Larger genomes have been associated with larger cell sizes, lower metabolic rates, and longer embryonic and larval durations in many different taxonomic groups. These life-history traits are often important for dictating fitness under different environmental conditions, suggesting that a species' genome size may have the potential to constrain its ecological distribution. We test how genome size varies with the ephemerality of larval habitat across the salamanders, predicting that species with larger genomes will be constrained to more permanent habitats that permit slower development, while species with smaller genomes will be more broadly distributed across the gradient of habitat ephemerality. We found that salamanders with larger genomes are almost exclusively associated with permanent aquatic habitats. In addition, the evolutionary transition rate between permanent and ephemeral larval habitats is much higher in salamander lineages with smaller genome sizes. These patterns suggest that genome size may act as an evolutionary constraint on the ecological habitats of salamanders, restricting those species with large genomes and slower development to habitats with permanent sources of water.

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Lawrence, M. E. "Senecio L. (Asteraceae) in Australia: Reproductive biology of a genus found primarily in unstable environments." Australian Journal of Botany 33, no. 2 (1985): 197. http://dx.doi.org/10.1071/bt9850197.

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The reproductive biology of 28 native and four exotic species of Senecio is described in terms of their breeding system, longevity, habitat stability, seed size and number, dispersal potential and seedling establishment. Nineteen species (15 perennial, 2 annual, 2 ephemeral) are self-incompatible, 13 are self-compatible (4 perennial, 7 annual, 2 ephemeral) and nearly all occur in unstable environments. The success of the perennial species in unstable environments perhaps reflects the fact that they all reach sexual maturity within 1 year of germination and, provided populations of self-incompatible species are large enough, they can set seed in the first year.

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Hite, Jessica L., Jaime Bosch, Saioa Fernández-Beaskoetxea, Daniel Medina, and Spencer R. Hall. "Joint effects of habitat, zooplankton, host stage structure and diversity on amphibian chytrid." Proceedings of the Royal Society B: Biological Sciences 283, no. 1835 (2016): 20160832. http://dx.doi.org/10.1098/rspb.2016.0832.

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Why does the severity of parasite infection differ dramatically across habitats? This question remains challenging to answer because multiple correlated pathways drive disease. Here, we examined habitat–disease links through direct effects on parasites and indirect effects on parasite predators (zooplankton), host diversity and key life stages of hosts. We used a case study of amphibian hosts and the chytrid fungus, Batrachochytrium dendrobatidis , in a set of permanent and ephemeral alpine ponds. A field experiment showed that ultraviolet radiation (UVR) killed the free-living infectious stage of the parasite. Yet, permanent ponds with more UVR exposure had higher infection prevalence. Two habitat-related indirect effects worked together to counteract parasite losses from UVR: (i) UVR reduced the density of parasite predators and (ii) permanent sites fostered multi-season host larvae that fuelled parasite production. Host diversity was unlinked to hydroperiod or UVR but counteracted parasite gains; sites with higher diversity of host species had lower prevalence of infection. Thus, while habitat structure explained considerable variation in infection prevalence through two indirect pathways, it could not account for everything. This study demonstrates the importance of creating mechanistic, food web-based links between multiple habitat dimensions and disease.

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Aspbury, Andrea S., and Steven A. Juliano. "Negative effects of habitat drying and prior exploitation on the detritus resource in an ephemeral aquatic habitat." Oecologia 115, no. 1-2 (1998): 137–48. http://dx.doi.org/10.1007/s004420050500.

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Uden, Daniel R., Craig R. Allen, Andrew A. Bishop, et al. "Predictions of future ephemeral springtime waterbird stopover habitat availability under global change." Ecosphere 6, no. 11 (2015): art215. http://dx.doi.org/10.1890/es15-00256.1.

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Sladecek, Frantisek Xaver Jiri, Jan Hrcek, Petr Klimes, and Martin Konvicka. "Interplay of succession and seasonality reflects resource utilization in an ephemeral habitat." Acta Oecologica 46 (January 2013): 17–24. http://dx.doi.org/10.1016/j.actao.2012.10.012.

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Ferzoco, Ilia Maria C., Celina B. Baines, and Shannon J. McCauley. "Co-occurring Notonecta (Hemiptera: Heteroptera: Notonectidae) Species Differ in Their Behavioral Response to Cues of Belostoma (Hemiptera: Heteroptera: Belostomatidae) Predation Risk." Annals of the Entomological Society of America 112, no. 4 (2019): 402–8. http://dx.doi.org/10.1093/aesa/saz021.

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Abstract Predators affect prey through direct consumption as well as by inducing prey to defensively alter their phenotypes, including behavioral phenotypes, to maximize survival under predation risk. Closely related sympatric prey species with shared natural enemies may resolve behavioral trade-offs under predation risk differently. In a laboratory experiment, we investigated two co-occurring semiaquatic backswimmer congeners, which exhibit differences in their degree of habitat specialization across a gradient of habitat permanence. Notonecta irrorata Uhler primarily occur in ephemeral ponds, whereas Notonecta undulata Say are habitat generalists that are commonly found in both permanent and ephemeral ponds. We tested whether the two species differed in antipredator responses to both visual and chemical cues of a shared predator, the giant water bug, in a fully factorial design. The generalist species, N. undulata, exhibited reductions in activity in the presence of predator chemical cues only, whereas the specialist species, N. irrorata, remained consistently active across predator cue treatments. Our work shows that there are species-specific differences in how prey assess or respond to predation risk. The varying propensities of these backswimmer congeners to behaviorally respond to a shared predator, and differences in their behavior when exposed to different predation risk cues may be linked to underlying divergence in their life-history strategies.

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Val, J., T. Mazzer, and D. Shelly. "A new record of the dusky hopping mouse (Notomys fuscus) in New South Wales." Australian Mammalogy 34, no. 2 (2012): 257. http://dx.doi.org/10.1071/am11031.

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The dusky hopping mouse, Notomys fuscus, is a desert rodent that occurs in the Simpson Strzelecki Dunefield Bioregion in Queensland, South Australia and New South Wales, where stabilised sand dunes are its preferred habitat. A recent capture from the Broken Hill Complex Bioregion in an atypical habitat (bluebush shrubland) and new locality ~170 km south of the nearest New South Wales record may indicate a significant population eruption and subsequent migration into new areas following the widespread ephemeral and perennial plant production pulse that occurred in 2010.

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Leynaud, Gerardo, Julián Lescano, and Laura Pereyra. "Breeding-site selection by red-belly toads, Melanophryniscus stelzneri (Anura: Bufonidae), in Sierras of Córdoba, Argentina." Amphibia-Reptilia 32, no. 1 (2011): 105–12. http://dx.doi.org/10.1163/017353710x543029.

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AbstractDifferences among wetlands can have important consequences on reproductive success of amphibians; therefore habitat selection is expected to be of particular importance for anurans inhabiting heterogeneous environments. To investigate if the red-belly toad (Melanophryniscus stelzneri; Anura: Bufonidae) uses available habitats differentially and to determine the main factors influencing the use of certain water bodies as breeding habitat, we surveyed 30 spawning sites used by red-belly toads, and 30 adjacent unused sites, in an area of the Sierras of Córdoba, Argentina. We evaluated the relative importance of morphological and biotic features of ponds, and the presence of other organisms within the water body on the use of ponds as breeding sites by red-belly toads. Eight habitat variables related to important water body features were recorded and were used to fit a habitat selection model with GLM. Red-belly toads presented a positive selection to mallines, a wetland characteristic of the Sierras of Córdoba. They were associated with small, shallow ephemeral ponds with muddy banks and a high percent of vegetation cover. In general, the ponds used did not host other anuran species or potential predators. Breeding site selection by red-belly toads is largely consistent with records for other species of the genus in other parts of Argentina.

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LI, CHUNLIN, YANG YANG, ZHEN WANG, LING YANG, DONGMEI ZHANG, and LIZHI ZHOU. "The relationship between seasonal water level fluctuation and habitat availability for wintering waterbirds at Shengjin Lake, China." Bird Conservation International 29, no. 1 (2018): 100–114. http://dx.doi.org/10.1017/s0959270918000035.

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SummaryConservation plans for waterbirds in periodically flooded wetlands should be based on a deep understanding of the relationship between habitat availability and the hydrological regime. Using waterbird surveys and remotely sensed images, we investigated how habitat availability for wintering waterbirds was regulated by seasonal water level fluctuation at Shengjin Lake in the lower Yangtze River floodplain, which is an important wintering area along the East Asian-Australasian Flyway. We recorded 52 waterbird species during three field surveys, and categorised them into four groups based on their foraging preferences: grassland, mudflats, shallow water, or deep water. Habitat availability for the four groups was significantly influenced by fluctuations in water level. Habitat for deep-water feeders dominated the lake throughout the year, despite contracting during the wintering season. Water recession during winter exposed more diverse riparian habitats that showed high spatial heterogeneity at the landscape level, with the Upper Lake providing the most suitable habitats for the most diverse and abundant waterbirds. It is worth noting that the water level was regulated highly for aquaculture during the early wintering period, impeding access to suitable habitats for the early-arriving waterbirds that foraged in the riparian mudflats and grassland. Furthermore, rapid water recession from the opening of a sluice gate allowed the exposed moist mudflats to dry up quickly, reducing its suitability for shorebirds and cranes. For effective wintering waterbird conservation in the ephemeral lacustrine wetlands in the Yangtze River floodplain, we suggest stepwise water recession plans, together with the recovery of the aquatic vegetation community and reduction in high-density aquaculture, to synchronise the exposure of foraging habitats with the migration phenology of different waterbird species.

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Kavanagh, RP. "Forest Phenology and Its Effect on Foraging Behavior and Selection of Habitat by the Yellow-Bellied Glider, Petaurus-Australis Shaw." Wildlife Research 14, no. 4 (1987): 371. http://dx.doi.org/10.1071/wr9870371.

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The foraging behaviour of the yellow-bellied glider was observed for more than 3 years in south-eastern New South Wales. The use of different substrates by foraging gliders followed an annual cycle which was correlated with the phenological pattern in the forest. Flowering and bark shedding on eucalypts were the characters of tree phenology most useful for predicting the behaviour of foraging animals. Gliders concentrated their foraging efforts on ephemeral food resources, particularly those obtained from under loose bark; this led to a seasonal pattern in the use of tree species and habitats in the study area. The preferred habitat of P. australis is likely to be characterised by a mosaic of tree-species associations, including those which flower in winter. Smooth-barked eucalypts are important because of the diversity of foraging substrates, and hence food resources, which they provide. The patchy distribution of these gliders may be explained by differences in floristic diversity and the complexity of the habitat mosaic.

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Chargulaf, Craig A., and Ian R. Tibbetts. "Spatial and temporal variation of meiofauna community structure in soft-sediment pools around Moreton Bay, Australia." Australian Journal of Zoology 63, no. 3 (2015): 204. http://dx.doi.org/10.1071/zo14063.

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In eastern Australia, small ephemeral soft-sediment pools are common on sheltered sand- and mudflats, and are occupied by the juveniles of fishes of economic and ecological importance. To address the question of whether these pools are merely refugia or whether they constitute a hitherto unrecognised nursery feeding habitat for small obligate meiobenthivorous fishes, we surveyed the meiofaunal communities of ephemeral soft-sediment pools within three intertidal shores of Moreton Bay, Australia. Highest mean meiofaunal abundances occurred at Godwin Beach and differed significantly throughout the year. Nematodes and copepods were the most abundant taxa while all other taxa contributed to <10% of the total meiofaunal abundance. Pool characteristics (i.e. volume and surface area) did not correlate with the abundance of benthic faunal assemblages. Overall, ephemeral soft-sediment pools of Moreton Bay support meiofaunal communities that are likely to provide prey resources for juvenile and small fish that use them as nurseries at low tide.

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Adams, Aaron J., and R. Kirby Wolfe. "Occurrence and persistence of non-native Cichlasoma urophthalmus (family Cichlidae) in estuarine habitats of south-west Florida (USA): environmental controls and movement patterns." Marine and Freshwater Research 58, no. 10 (2007): 921. http://dx.doi.org/10.1071/mf07086.

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The geographic scope of species introductions has increased dramatically in the last 200 years. One of the greatest challenges to understanding the ecological consequences of non-native species is that it has been difficult to identify the attributes that allow them to become established outside their native range. This challenge is compounded by anthropogenic habitat alteration that often enhances the establishment and expansion of non-native species. Fishes in the family Cichlidae are notoriously adaptive, and contribute more non-native species to North America than any other fish family. This is especially true in Florida (USA), where 18 cichlid species have become established. The Mayan cichlid (Cichlasoma urophthalmus) was first documented in south Florida in 1983, and is present in many freshwater and estuarine habitats. This study reports a northward range expansion by C. urophthalmus, demonstrates the connectivity between altered freshwater habitats and tidal estuarine habitats, and suggests that the estuarine populations are ephemeral and dependent upon colonisation from populations in altered freshwater habitats.

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Ranarilalatiana, Tolotra, and Johannes Bergsten. "Discovery of a specialist Copelatinae fauna on Madagascar: highly ephemeral tropical forest floor depressions as an overlooked habitat for diving beetles (Coleoptera, Dytiscidae)." ZooKeys 871 (August 12, 2019): 89–118. http://dx.doi.org/10.3897/zookeys.871.36337.

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Diving beetles are generally aquatic and live submerged in water during larval and adult stages. A few groups have colonised hygropetric habitats and fewer species still can possibly be referred to as terrestrial. Here we describe six new Copelatine species that were mainly found in dry shallow forest floor depressions in the eastern and northeastern lowland humid forests of Madagascar. Three new species are described in each of the two genera Copelatus and Madaglymbus: Copelatus amphibiussp. nov., Copelatus betamponasp. nov., Copelatus zanatanensissp. nov., Madaglymbus kelimasosp. nov., Madaglymbus menalambasp. nov., and Madaglymbus semifactussp. nov. Diagnosis, description, known distribution, ecology, and conservation notes are provided for each species. All species are illustrated with a dorsal habitus image, ventral and lateral views of the male penis, and parameres. Photographs of the unusual terrestrial habitats where the species were found are provided. Madaglymbus menalambasp. nov. is also documented with macrophotos and videorecordings of the terrestrial locomotion and behaviour in the field. Although these species should not be classified as terrestrial, or even semi-terrestrial Dytiscidae, they seem to be specialists of very ephemeral aquatic habitats and stay put instead of disperse when the habitat dries up. It is hypothesised that this lifestyle and behaviour on Madagascar is restricted to the high-precipitation humid forest regions mainly in the east. It may also represent a transition step, or stepping-stone, towards becoming fully terrestrial, a step that the few known terrestrial Dytiscid taxa once passed through. It is very likely that this type of habitat is overlooked for aquatic beetles, not only in Madagascar, and the six species herein described may be just the “tip of the iceberg”.

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Altermatt, Florian, and Dieter Ebert. "Populations in small, ephemeral habitat patches may drive dynamics in a Daphnia magna metapopulation." Ecology 91, no. 10 (2010): 2975–82. http://dx.doi.org/10.1890/09-2016.1.

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Mahaut, Lucie, Guillaume Fried, and Sabrina Gaba. "Patch dynamics and temporal dispersal partly shape annual plant communities in ephemeral habitat patches." Oikos 127, no. 1 (2017): 147–59. http://dx.doi.org/10.1111/oik.04415.

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Aquiloni, Laura, Maria Ilhéu, and Francesca Gherardi. "Habitat use and dispersal of the invasive crayfishProcambarus clarkiiin ephemeral water bodies of Portugal." Marine and Freshwater Behaviour and Physiology 38, no. 4 (2005): 225–36. http://dx.doi.org/10.1080/10236240500310195.

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Pias, Kyle E., Robert J. Fletcher, and Wiley M. Kitchens. "Assessing the Value of Novel Habitats to Snail Kites through Foraging Behavior and Nest Survival." Journal of Fish and Wildlife Management 7, no. 2 (2016): 449–60. http://dx.doi.org/10.3996/022016-jfwm-008.

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Abstract Novel ecosystems arise for a variety of reasons, most notably from the introduction of nonnative species. Understanding the interactions between traditional habitats, novel habitats, and species of conservation interest is important when planning successful conservation strategies. In the United States, the snail kite Rostrhamus sociabilis plumbeus is a federally endangered species whose population in Florida has undergone declines within the past decade. While studying the foraging behavior of breeding snail kites on Lake Tohopekaliga (Lake Toho), we discovered the unexpected use of disturbed ephemeral wetlands adjacent to the lake. These wetlands represent a novel habitat for snail kites; they would not have been viable foraging areas prior to the introduction of the exotic island apple snail Pomacea maculata. By examining the differences between snail kite behavior in traditional and novel habitats, we were able to identify some characteristics of novel habitats that may be important in determining their value to snail kites. The novel wetland areas were highly attractive to snail kites, likely because of the high snail capture rates. The survival of snail kite nests occurring within the novel areas appeared to be similar to that of nests occurring in more traditional, nearby areas on Lake Toho. However, whether or not snail kites used novel habitats as nesting areas appeared to be dependent upon water depth and availability of nesting substrate within these areas. The snail kites' dynamic use of the novel habitat demonstrates both the value of a novel ecosystem and the importance of traditional habitats to a species of conservation concern.

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Finston, Terrie. "Size, shape and development time are plastic traits in salt lake ostracods of the Mytilocypris mytiloides (Ostracoda:Cyprididae) species complex." Marine and Freshwater Research 58, no. 6 (2007): 511. http://dx.doi.org/10.1071/mf06162.

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The taxonomy of the ostracod genus Mytilocypris is based in part on characters of shell morphology. Specifically, M. minuta, M. mytiloides and M. tasmanica chapmani lack distinctive internal characters and are differentiated largely on size and shape of the shell. The three taxa also differ in the salinity of the habitats they occupy. A field study showed a steady decrease in adult size, spanning the size range of all three taxa, over the course of a season within single lakes, in association with changing salinity and other environmental variables. The present study was conducted to investigate whether each phenotype could be produced under laboratory conditions of variable salinity. Offspring of the three parental phenotypes were raised under high and low salinity. Regardless of parental type, offspring grew more quickly, but reached a smaller size at high salinity, and grew more slowly, but reached a larger size at low salinity. The shape of the shell was found to have a significant size component. Plasticity in size and shape suggests these are unreliable characters for taxonomy. Accelerated development may be an adaptation to living in an ephemeral habitat, with salinity being one of the cues Mytilocypris uses to gauge habitat duration.

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Michel, Jacqueline, Christine Boring, and Chris Locke. "RAPID ASSESSMENT PROTOCOLS FOR SMALL VESSEL GROUNDINGS." International Oil Spill Conference Proceedings 2008, no. 1 (2008): 381–86. http://dx.doi.org/10.7901/2169-3358-2008-1-381.

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ABSTRACT Vessel groundings in coral or seagrass habitats can cause significant injury to these benthic communities. Injury assessment requires information on the areal extent and degrees of injury at the grounding site, including the inbound and exit vessel tracks. Scientific divers need to rapidly delineate the boundaries of the impacted areas, map the location of specific points (such as large dislodged coral heads), and record observations along transects underwater. A series of 2–3 page protocols was developed to provide guidance on collection of key ephemeral data after small vessel groundings, particularly where resources are limited and access is difficult. The Initial Assessment protocol outlines the steps to plan and conduct emergency phase surveys to document the physical injuries. Guidance is provided on how to set up the sampling grids, develop site-specific injury categories, and record field parameters. The Live Coral Triage protocol describes how to salvage and stabilize live coral and associated resources in a coral reef or hardbottom habitat that have been physically fractured, dislodged, or overturned. The Underwater Video Mapping protocol describes how to document and provide a permanent video record of the area, type, and degree of physical damage to benthic communities. These protocols for small vessel groundings should assist first responders collect ephemeral data during the emergency phases of a response and start the recovery process.

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Leigh, Sandra J., and Brenton P. Zampatti. "Movement and mortality of Murray cod, Maccullochella peelii, during overbank flows in the lower River Murray, Australia." Australian Journal of Zoology 61, no. 2 (2013): 160. http://dx.doi.org/10.1071/zo12124.

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Conservation of Murray cod (Maccullochella peelii), a large endangered fish species of Australia’s Murray–Darling Basin, relies on a detailed understanding of life history, including movement patterns and habitat use. We used radio-tracking to investigate the movement of 36 Murray cod in main channel and anabranch habitats of the lower River Murray during a flood and associated hypoxic blackwater event. During a flood peak of ~93 000 ML day–1, dissolved oxygen decreased to 1.2 mg L–1. Four movement types were observed: (1) localised small-scale movement, (2) broad-scale movement within anabranch habitats, (3) movement between anabranch and main channel habitats, and (4) large-scale riverine movement. Murray cod exhibited high fidelity to anabranch habitats but also moved extensively between anabranches and the main channel. Fish were consistently located in the main channel or permanent anabranches, suggesting that use of ephemeral floodplain habitats is limited, and highlighting the importance of connectivity between off-channel and main channel habitats. Mortality of radio-tagged fish was considerable (25%) in association with low dissolved oxygen concentrations, indicating that hypoxic blackwater may have had a substantial impact on Murray cod populations in the lower River Murray.

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Horgan, Finbarr G. "Aggregation and coexistence of dung beetles in montane rain forest and deforested sites in central Peru." Journal of Tropical Ecology 22, no. 4 (2006): 359–70. http://dx.doi.org/10.1017/s026646740600321x.

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The ‘aggregation model of coexistence’ predicts that a strong and independent aggregation of species across ephemeral resource patches promotes species coexistence and maintains diversity. This study examines the role of aggregation in maintaining tropical dung beetle diversity and the effects of deforestation on aggregation patterns and diversity loss. Using clusters of pitfall traps, dung beetle aggregation was quantified in natural and disturbed habitat at nested temporal and spatial scales in central Peru. The results indicate that dung was colonized by a greater number of species, many of which were large, leading to a higher total beetle biomass in forest habitat than in deforested, farm habitat. Beetles were intraspecifically aggregated at each spatial scale examined. Habitat-type (forest/deforested) had no effect on the intensity of intra- or interspecific aggregation. Analyses of aggregation patterns revealed that dung beetle assemblages in forest habitat were generally saturated whereas in deforested habitat they were unsaturated. In general, interspecific aggregation was too weak relative to intraspecific aggregation to explain the high diversity of species in forest habitat. Other mechanisms, including resource partitioning are likely to play a greater role in maintaining the diversity of dung beetle assemblages in the region. These results also indicate that the loss of species from disturbed habitat has not been due to a breakdown in the aggregation mechanism.

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Mai, Thien T., and Kevin A. Hovel. "Influence of local-scale and landscape-scale habitat characteristics on California spiny lobster (Panulirus interruptus) abundance and survival." Marine and Freshwater Research 58, no. 5 (2007): 419. http://dx.doi.org/10.1071/mf06141.

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For many marine systems, little is known about the effects of habitat structure on ecological processes that dictate population dynamics. This study focused on the effects of habitat structure on behaviour, abundance, and survival of California spiny lobster (Panulirus interruptus Randall) in the Point Loma kelp forest, San Diego, California. Habitat characteristics were quantified in 400-m2 landscapes to determine the role of shelter and understorey kelp characteristics at local (shelter) scales and landscape scales on lobster habitat use. A tethering experiment determined the effects of the presence of understorey kelp on lobster survival. At the shelter scale, lobsters preferred permanent shelters to ephemeral shelters, but did not respond to shelter size. At the landscape scale, lobster density increased with Pterygophora californica (stipitate kelp) density and decreased with Laminaria farlowii (prostrate kelp) density, but lobster density did not vary with shelter density or dispersion. Lobster size increased with P. californica density in two of three surveys, while lobster size did not vary with L. farlowii density. Lobster relative survival was higher in the presence of understorey kelp than when kelp was absent. We conclude that lobsters respond to habitat characteristics at local and landscape scales, and that understorey kelp has strong effects on lobster habitat use and survival.

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Kúr, Pavel, Soňa Píšová, Karin Tremetsberger, et al. "Ecology and Genetics of Cyperus fuscus in Central Europe—A Model for Ephemeral Wetland Plant Research and Conservation." Water 13, no. 9 (2021): 1277. http://dx.doi.org/10.3390/w13091277.

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The ecology and species diversity of ephemeral wetland vegetation have been fairly well studied, but the biology of its characteristic species has rarely been investigated holistically. Here we combine previous results on the genetic diversity of a suitable model species (the diploid Cyperus fuscus) with new data on its historical and recent occurrence, its ecological and climatic niche, and the associated vegetation. Analysis of phytosociological relevés from Central Europe revealed a broad ecological niche of C. fuscus with an optimum in the Isoëto-Nanojuncetea class, extending to several other vegetation types. Overall species composition in the relevés highlight C. fuscus as a potential indicator of habitat conditions suitable for a range of other threatened taxa. Analysis of historical records of C. fuscus from the Czech Republic showed an increasing trend in the number of localities since the 1990s. It seems that recent climate warming allows the thermophilous C. fuscus to expand its range into colder regions. Isoëto-Nanojuncetea and Bidentetea species are well represented in the soil seed bank in both riverine and anthropogenic habitats of C. fuscus. Vegetation diversity has a weak negative effect and anthropogenic (compared to riverine) habitats have a strong negative effect on genetic diversity in this species.

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Szczęśniak, Ewa, Jan Błachuta, Marek Krukowski, and Joanna Picińska-Fałtynowicz. "Distribution of Azolla filiculoides Lam. (Azollaceae) in Poland." Acta Societatis Botanicorum Poloniae 78, no. 3 (2011): 241–46. http://dx.doi.org/10.5586/asbp.2009.031.

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Azolla filiculoides has been an ephemeral plant in Poland since the end of the 20th century. In the last 15 years this species appeared in 5 locations in south-west Poland. Habitat and plants of two populations became destroyed, three other still exist. A. filiculoides occurs in eutrophic or even polluted water where it forms dense mats, up to 10 cm thick. It stays sterile and propagates only in a vegetative manner. Frost resistance of Lower Silesia populations is higher than reported so far; fern may winter and rebuild the population after frost reaching 22oC. Size of the populations is changeable during the vegetation season. A. filiculoides occurs in water habitats and plant communities in which it substitutes Lemna minor.

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Shapcott, Alison, Robert W. Lamont, Gabriel Conroy, Heather E. James, and Yoko Shimizu-Kimura. "A genetic, demographic and habitat evaluation of an endangered ephemeral species Xerothamnella herbacea from Australia’s Brigalow belt." Australian Journal of Botany 65, no. 1 (2017): 38. http://dx.doi.org/10.1071/bt16148.

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Little remains of the Brigalow (Acacia harpophylla F.Muell. ex Benth.) woodlands of Australia, primarily due to land clearing for grazing and agriculture. Many threatened species in this region are poorly studied, and the life history traits of some herbaceous species such as ephemeral shoot systems, mean that conservation assessments are difficult. Recent gas pipeline developments have led to an increased need to understand the ecology and genetics of such taxa, in order to advise offset and translocation activities. Xerothamnella herbacea R.Baker is an endangered ephemeral herbaceous species from the Brigalow Belt region, which dies back during prolonged dry conditions. The aim of this study was to map the extent of potentially suitable habitat of this species, including determination of population extent within existing protected area estate. The species population sizes, reproductive activity and evidence of clonal spread, as well as the levels of genetic diversity and inbreeding, across the species range were also assessed to provide guidance for potential translocation and offsetting programs. The genetic results were related to the species suitable habitat distribution to test whether historic or recent habitat fragmentation most explains genetic patterns in this species. Most of the populations of this species were found to be small with less than 100 plants. The species appears not to be limited by its reproductive output, suggesting other factors may limit its abundance. The species populations have moderate to low genetic diversity suggesting the species is genetically viable in the medium term but are inbred which may be partially due to vegetative spread. Geographic proximity does not predict genetic similarity of populations and diversity is not correlated with population size. The results indicate potential translocation or offsetting programs need to account for genetic relationships in their planning. Resprouting ability has potentially assisted the species to slow the pace of genetic diversity loss due to anthropogenic fragmentation.

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Cerame, Blain, James A. Cox, Robb T. Brumfield, James W. Tucker, and Sabrina S. Taylor. "Adaptation to Ephemeral Habitat May Overcome Natural Barriers and Severe Habitat Fragmentation in a Fire-Dependent Species, the Bachman's Sparrow (Peucaea aestivalis)." PLoS ONE 9, no. 9 (2014): e105782. http://dx.doi.org/10.1371/journal.pone.0105782.

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Benwell, Andrew. "Response of rock-outcrop and fringing vegetation to disturbance by fire and drought." Australian Journal of Botany 55, no. 7 (2007): 736. http://dx.doi.org/10.1071/bt07050.

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A comparative study of vegetation responses to fire and drought investigated whether species regeneration mode, seedling density response (SDR) and seedling shoot growth rate varied significantly in relation to disturbance agent (fire and drought), habitat type (rock-outcrop and fringing vegetation) and plant growth form. A three-way ANOVA showed that SDR varied significantly in relation to all three categorical variables and most strongly in relation to disturbance agent. Seeders comprised 87% of the post-fire flora and 99.3% of the peak seedling population in rock-outcrop habitat, while resprouters were much more prominent in fringing woodland. Species SDRs and seedling growth rates were generally much higher after fire. Fire produced a high SDR with high shrub, grass and ephemeral therophyte components, and drought produced a low SDR dominated by grasses and herbs and inhibited shrub and ephemeral recruitment. Post-fire obligate-seeder shrubs behaved as facultative resprouters after drought. Some species exhibited SDRs equivalent to fire and drought, others appeared to require fire for regeneration, while others recruited more successfully after drought. This spectrum of responses indicated a range of optimal disturbance environments, depending on species, which was only partly consistent with the hypothesis that species exhibit essentially the same life-history syndromes in response to fire and drought. The dominance of seeders in outcrop vegetation appeared to be related to skeletal soil, higher disturbance frequency and soil trophic conditions, rather than low fire frequency.

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Rodgers, James A., William B. Brooks, and Mark Barrett. "Productivity and Habitat Modeling of Wood Storks Nesting in North and Central Florida." Journal of Fish and Wildlife Management 3, no. 2 (2012): 252–65. http://dx.doi.org/10.3996/022012-jfwm-016.

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Abstract Rainfall, surface water levels, location within the state, and area and types of habitats (n = 29) surrounding wood stork Mycteria americana colonies in North and Central Florida were analyzed at 10-km, 20-km, and 30-km radii around each colony to examine their relationship with fledging rate and number of nests during 2003–2005. Seven variables within 10 km, 14 variables within 20 km, and 6 variables within 30 km of colonies were correlated with fledging rates. Fledging rate and number of nests were significantly associated with both wetland and nonwetland area and habitats. Among all the variables, fledging rate was most strongly associated with rainfall during the preceding 12–24 mo. Both larger colonies and colonies in North Florida had higher fledging rates. Although some variables had a positive association and other variables had a negative correlation with fledging rates, results were not consistent across all three radii, which suggests that the effects of hydrologic and habitat variables differs with increasing distance from a colony. The size of a wood stork colony was sensitive to a larger number of variables and varied by distances from the colony. Colonies were smaller in the northern part of Florida, and coastal colonies were larger than interior colonies. Because wood storks often use ephemeral foraging sites closer to a colony early in the season and those sites may not be available later in the season, wood storks may shift to alternate, more distant sites and habitats later in the season. A hypothesis is proposed whereby wood storks establish their colonies using proximate clues of prey availability based on the effects of past rainfall and certain preferred habitat types. These proximate cues to prey availability and foraging substrate surrounding a colony are detected by wood storks before the onset and during the initial nesting season. However, the long-term stability of a colony may ultimately be determined by yearly rainfall patterns and habitat variables at larger distances and by fledging rates that contribute to recruitment of nesting birds and an increase in number of nests.

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Moldowan, Patrick D., Matthew G. Keevil, Peter B. Mills, Ronald J. Brooks, and Jacqueline D. Litzgus. "Diet and feeding behaviour of Snapping Turtles (Chelydra serpentina) and Midland Painted Turtles (Chrysemys picta marginata) in Algonquin Provincial Park, Ontario." Canadian Field-Naturalist 129, no. 4 (2016): 403. http://dx.doi.org/10.22621/cfn.v129i4.1764.

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We compare diet and feeding behaviour of Snapping Turtles (Chelydra serpentina) and Midland Painted Turtles (Chrysemys picta marginata) in Algonquin Provincial Park, Ontario, Canada. We observed young Chelydra and Chrysemys turtles feeding on insect and amphibian larvae in ephemeral ponds, adult Chrysemys terrestrially foraging on odonate larvae, and adult Chelydra consuming aquatic vegetation and seeds. These and other observations highlight the importance of seasonally available habitat and food for juvenile turtles. We also discuss the evidence for, and importance of, turtles as seed-dispersal agents for aquatic vegetation. Illustrative video recordings accompany our dietary observations.

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Moseby, K. E., R. Brandle, and M. Adams. "Distribution, habitat and conservation status of the rare dusky hopping-mouse, Notomys fuscus (Rodentia : Muridae)." Wildlife Research 26, no. 4 (1999): 479. http://dx.doi.org/10.1071/wr97061.

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The distribution, habitat and conservation status of Notomys fuscus were determined by collating past records of the species and conducting field investigations covering areas of historical distribution and similar habitats. Detailed population sampling was carried out in two geographically distinct locations where populations appeared to be extant. Evidence of N. fuscus was found throughout the Strzelecki Desert east and south of the Strzelecki Creek in South Australia and in an isolated group of dunes south-east of the Diamantina River in south-west Queensland. Populations were located in a variety of sand dune habitats (excepting those dominated by Triodia) throughout these areas, implying that the species is a habitat-generalist with a preference for a sandy substrate. Eight floristic groups were identified from the 66 sites sampled, three of which supported N. fuscus populations. These ranged from extremely degraded dune and sand plain systems in the southern Strzelecki Desert, supporting mostly ephemeral plants, to well-vegetated dunes covered by sandhill canegrass,Zygochloa paradoxa, in south-west Queensland. However, the results suggest that the presence of consolidated dunes and perennial vegetation are important for the maintenance of stable populations. Relatively dense populations of N. fuscus were recorded only in the vicinity of major drainage systems. It is hypothesised that the higher nutrient status of the soils surrounding such systems may be an important factor affecting the distribution of N. fuscus. The study reaffirmed the species’ decline since European settlement of Australia, and recommends that the present vulnerable status of the species (IUCN Species Survival Commission (SSC) Rodent Specialist Group) be maintained.

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CUKIER, Stanisław. "MONITORING PROPOSAL OF THE SPECIES Streptocephalus torvicornis (Waga 1842) IN POLAND." Folia Pomeranae Universitatis Technologiae Stetinensis Agricultura, Alimentaria, Piscaria et Zootechnica 356, no. 55 (2020): 11–22. http://dx.doi.org/10.21005/aapz2020.55.3.02.

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The paper presents a proposal of methods for monitoring the species Streptocephalus torvicornis, which belongs to large branchiopods. This species occurs in small ephemeral water bodies. Currently, there is only one known locality of S. torvicornis in Poland. Many species of large branchiopods are considered to be in danger of extinction. Their observation in the environment is hampered by the periodic nature of the occurrence of adults. The proposed method of population status assessment is based on the analysis of soil samples in terms of the presence of persistent cysts. The following factors may be used to assess the condition of the habitat: the presence of vegetation indicating the astatic or ephemeral nature of the pools, the level of succession of trees and shrubs, the presence of fish, the presence of potential sources of pollution. The proposed methods are universal and can be applied to the monitoring of other large branchiopods species. Regular monitoring may contribute to the recognition of other places of occurrence and will enable effective protection of the species S. torvicornis in Poland.

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Hendry, Rebecca, Kevin Wormington, and Kerry Walsh. "An ecological study of the central Queensland ultramafic endemic shrub Neoroepera buxifolia (Picrodendraceae), Australia." Australian Journal of Botany 63, no. 4 (2015): 269. http://dx.doi.org/10.1071/bt14184.

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The ultramafic endemic shrub Neoroepera buxifolia Muell.Arg. & F.Muell (Picrodendraceae) has high habitat specificity and is mostly restricted to the perennial and ephemeral creeks and drainage lines of the central Queensland ultramafic landscape. It has an association with high magnesium (Mg) concentrations in the soil and the present study seeks to determine whether there is a correlation between populations of N. buxifolia and the soil extractable Mg and/or Mg : calcium (Ca) quotients in the soil. This was achieved by measuring the standing volume, height and seedling counts of N. buxifolia against the soil elements and other plot characteristics. Whereas correlations were found between increased height of N. buxifolia and the Mg : Ca quotients, soil extractable nickel (Ni) had the greatest influence. The standing volume of N. buxifolia also increased with soil extractable Ni. The standing volume of N. buxifolia was greatest in the upper tributaries of the first-order ephemeral creeks and presence of permanent water of the perennial creeks did not influence the standing volume or height of N. buxfolia.

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Čarni, Andraž, Vlado Matevski, Urban Šilc, and Renata Ćušterevska. "Early spring ephemeral therophytic non-nitrophilous grasslands as a habitat of various species of romulea in the southern balkans." Acta Botanica Croatica 73, no. 1 (2014): 155–77. http://dx.doi.org/10.2478/botcro-2013-0017.

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AbstractThe work deals with habitats of Romulea bulbocodium and Romulea linaresii ssp. graeca in the southern Balkans. Both species appear in early spring ephemeral therophytic non-nitrophilous grasslands in regions under the influence of the Mediterranean climate. These communities are classified within the Romulion alliance, which encompasses such communities from the eastern Mediterranean area. It was established that the main climatic factor causing the diversity of these communities is seasonality in precipitation and temperature. Two associations are presented, as Lagopo-Poetum bulbosae and Romuleo graecae-Poetum bulbosae.

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Vander Stelt, Erin, Jeremie B. Fant, Susanne Masi, and Daniel J. Larkin. "Assessing habitat requirements and genetic status of a rare ephemeral wetland plant species, Isoëtes butleri Engelm." Aquatic Botany 138 (February 2017): 74–81. http://dx.doi.org/10.1016/j.aquabot.2017.01.002.

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