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601 results for “habitat diversity”
Open habitats in a tropical biodiversity hotspot support pollinator diversity in both protected and unprotected areas
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Ecological drivers of avian diversity in a subtropical landscape: effects of habitat diversity, primary productivity and anthropogenic disturbance
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Habitats and environmental variables investigated in a diversity survey on Polynucleobacter bacteria revealed by amplicon sequencing of priB genes
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Data for: Habitat diversity, resource availability, and island age in the species-area relationship
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Data from: Roadside diversity in relation to age and surrounding source habitat: evidence for long time lags in valuable green infrastructure
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Data from: Historical field records reveal habitat as an ecological correlate of locomotor phenotypic diversity in the radiation of Neotropical Geophagini fishes
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Taxonomic, functional, and phylogenetic diversity of anuran assemblages across habitats and seasons in a Neotropical savanna
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Data from: Consequences of extensive habitat fragmentation in landscape-level patterns of genetic diversity and structure in the Mediterranean esparto grasshopper
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Data from: Persistence in a fragmented habitat: Genetic diversity and pollination patterns in <em>Asclepias viridiflora</em>
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Data from: Diversity and dominance in bird assemblages across habitats in the Ñeembucú Wetlands Complex
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Diel temperature and pH variability scale with depth across diverse coral reef habitats
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Feeding habits influence species habitat associations at the landscape scale in a diverse clade of Neotropical fishes
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Data from: Indirect effects of habitat amount mediated by habitat configuration determine bat diversity at the landscape-scale in Peninsular Malaysia
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Habitat heterogeneity over multiple scales supports dense and diverse megafaunal communities on a NE Pacific ridge
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Figure 1 in Diversity and species composition of Araneidaeı Tetragnathidae and Nephilidae in different levels of disturbed habitats in Trinidadı West Indies
Figure 1. Map of Trinidad showing the location of sampling localities of natural (∙) and disturbed (O) habitats.
Plant intraspecific functional trait variation is related to within-habitat heterogeneity and genetic diversity in Trifolium montanum L.
<p>Intraspecific trait variation (ITV), based on available genetic diversity, is one of the major means plant populations can respond to environmental variability. The study of functional trait variation and diversity has become popular in ecological research, e.g. as a proxy for plant performance influencing fitness. Up to now, it is unclear which aspects of intraspecific functional trait variation (iFDCV) can be attributed to the environment or genetics under natural conditions. Here, we examined 260 individuals from 13 locations of the rare (semi-)dry calcareous grassland species Trifolium montanum L. in terms of iFDCV, within-habitat heterogeneity, and genetic diversity. The iFDCV was assessed by measuring functional traits (releasing height, biomass, leaf area, specific leaf area, leaf dry matter content, Fv/Fm, performance index, stomatal pore surface, and stomatal pore area index). Abiotic within-habitat heterogeneity was derived from altitude, slope exposure, slope, leaf area index, soil depth, and further soil factors. Based on microsatellites, we calculated expected heterozygosity (He) because it best-explained, among other indices, iFDCV. We performed multiple linear regression models quantifying relationships among iFDCV, abiotic within-habitat heterogeneity and genetic diversity, and also between separate functional traits and abiotic within-habitat heterogeneity or genetic diversity. We found that abiotic within-habitat heterogeneity influenced iFDCV twice as strong compared to genetic diversity. Both aspects together explained 77% of variation in iFDCV (Radj² = 0.77, F2, 10 = 21.66, p < 0.001). The majority of functional traits (releasing height, biomass, specific leaf area, leaf dry matter content, Fv/Fm and performance index) were related to abiotic habitat conditions indicating responses to environmental heterogeneity. In contrast, morphology-related functional traits (releasing height, biomass and leaf area) were only related to genetics. Our results suggest that both within-habitat heterogeneity and genetic diversity affect iFDCV, and are thus crucial to consider when aiming to understand or predict changes of plant species performance under changing environmental conditions.</p>
FIGURE 1 in Chironomidae (Diptera) of Croatia with notes on the diversity and distribution in various habitat types
FIGURE 1. Distribution of sampling sites throughout Croatia. Site codes: 1. Kopačko lake, Kopački Rit; 2. Sakadaš lake, Kopački Rit; 3. Biljsko lake, Bilje; 4. Đola, Darda; 5. Fountain I, Osijek; 6. Fountan II, Osijek; 7. Fountain III, Osijek; 8. Jug II urban pond, Osijek; 9. Kupska urban pond, Osijek; 10. Getro urban pond, Osijek; 11. Drava, Osijek; 12. Karašica, Črnkovci; 13. Lapovac; 14. Jošava; 15. Sava, Slavonski Šamac; 16. Sava, Slavonski Brod; 17. Jovanovica, Papuk; 18. Brzaja, Papuk; 19. Sjeverna Pakra; 20. Ljuta Pakra; 21. Rogljica, Psunj; 22. Šumetlica, Psunj; 23. Orljava, Slavonski Kobaš; 24. Sava, Davor; 25. Mura, Goričan; 26. Šoderica, Koprivnica; 27. Drava, Botovo; 28. Česma, Narta; 29. Popovac; 30. Pakra reservoir; 31. Sava, Jasenovac; 32. Fountain, Varaždin; 33. Aqucity, Varaždin; 34. Drava, Varaždin; 35. Danube, upstream Drava; 36. Sutla, Lu- pinjak; 37. Sutla, Zelenjak; 38. Sava, Drenje Brdovečko; 39. Sava, near Bregana; 40. Sava, Podsused; 41. Rakitje; 42. Jarun, Zagreb; 43. Sava, Ščitarjevo; 44. Novo Čiće; 45. Sava, Oborovo; 46. Sava, Dubrovčak; 47. Sava, Tišina; 48. Sava, Galdovo; 49. Kupa, Petrinja; 50. Stupnica, Gornja Stupnica; 51. Kupa, Ozalj-Mahićno; 52. Dobra, Novigrad na Dobri; 53. Mrežnica, Karlovac; 54. Mrežnica, Belavići; 55. Korana, Ladvenjak; 56. Mrežnica, Zvečaj; 57. Dobra, Skukani; 58. Dobra, Gorinci; 59. Dobra, Podumol; 60. Dobra, Lešće; 61. Globornica, Dobrenići; 62. Dobra, Trošmarija; 63. Turpinjska rijeka, Grabovac Krnjački; 64. Korana, Veljun; 65. Sabljaci; 66. Slunjčica, Rastoke; 67. Dobra, Vrbovsko; 68. Dobra, Gornja Dobra; 69. Dobra, izvorište Hlevci; 70. Kupa, Brod na Kupi; 71. Čabranka, Zamost; 72. Križ potok; 73. Lokve reservoir; 74. Rječina spring;75. Tribalj; 76. Jezero Njivice; 77. Ponikve, Krk; 78. Vransko jezero, Cres; 79. Boljunčica izvor; 80. Mirna izvor; 81. Butoniga jezero; 82. Butoniga izvor; 83. Mirna, Istarske toplice; 84. Mirna, Ponte Porton; 85. Rovinj; 86. Kozjak; 87. Crna rijeka spring; 88. Bijela Rijeka spring; 89. Vrba, Ramljani; 90. Gacka, Čovići; 91. Lukina jama; 92. Brušanka; 93. Počiteljica, Ornice; 94. Opsenice Sv. Rok; 95. Štikada; 96. Otuča, Gračac; 97. Butišnica spring; 98. Krupa spring; 99. Zrmanja, Ervenik- ušće u Krupu; 100. Butišnica, Golubić; 101. Radljevac; 102. Zrmanja, Palanka; 103. Zrmanja, Palanka– Ervenik; 104. Razovac reservoir; 105. Vlačine reservoir; 106. Peruća reservoir; 107. Krka, Roški slap; 108. Visovac; 109. Guduća, Bribišnica; 110. Vransko jezero, Biograd na moru; 111. Zeleno jezero; 112. Prološko Blato; 113. Rijeka Jadro spring; 114. Prančevići reservoir; 115. Rijeka Ma- tica, Vrgorac; 116. Neretva delta; 117. Sobra, Blatina; 118. Ljuta, Konavle; 119. Danube, Erdut.
Data from: Isolated trees support lower bird taxonomic richness than trees within habitat patches but similar functional diversity
<p><span>Large isolated trees are keystone structures that can help maintain biodiversity in fragmented landscapes, with evidence that open areas with isolated trees may support similar levels of taxonomic diversity to nearby patches of habitat. However, it is not clear if isolated trees can support the same diversity of ecological functions as trees in habitat patches. We compared species richness, community composition and functional diversity of birds in trees at forest edges and isolated trees. Twenty isolated trees and ten edge trees of American muskwood (<i>Guarea guidonia</i>) were selected, and sampled on 11 occasions, each of 20 minutes, over four months. All individual birds that landed at trees were recorded using a standardized protocol. Species richness was, on average, almost twice as high at edge trees than at isolated trees. Taxonomic composition differed between edge and isolated trees, with many forest-dependent birds restricted to edge trees, and some open-area birds restricted to isolated trees. Overall functional diversity was similar at edge and isolated trees, but some ecological functions (e.g. frugivory) were less frequent, while others (e.g. granivory) were more frequent at isolated compared to edge trees. Isolated trees are important for supporting many ecological functions in modified areas. However, the maintenance of forest patches is essential to complement the provision of such functions in modified landscapes. </span></p>
Ephemeral habitat supports high alpha and beta diversity during drought in a subtropical semiarid wetland
<p>Globally, the number of rivers with intermittent flow is increasing due to climate change and water abstraction for human consumption. Currently, our understanding of how hydrology in subtropical rivers with intermittent flow affects the structure and dynamics of aquatic communities is poorly understood. Here, we investigated how fish α and β-diversity patterns in intermittent channels in the lower reaches of the Okavango Delta respond to seasonal flooding and drought. Under low-flow conditions, ephemeral habitat had higher α-diversity, and this was influenced by a combination of fish aggregation and apparent transient legacy effects as habitat patches became smaller and more isolated. Investigation of changes in fish assemblage structure across different hydrological periods and habitat types showed significant species turnover when water levels fell, suggesting a strong influence from species sorting. During high-water periods, species assemblages were homogenized both at local and regional scales, suggesting a greater influence of mass effects. Our findings support hydrology as a major factor regulating diversity patterns in intermittent rivers of a major wetland in a semiarid region of subtropical Africa. We infer from these findings that maintenance of a relatively natural flow regime will be necessary for conserving aquatic ecosystem structure and function in this system.</p>
Data from: The theory of island biogeography, the sample-area effect, and the habitat diversity hypothesis: complementarity in a naturally fragmented landscape of lake islands
Aim: Investigate relationships between fragmentation and species diversity in the context of the theory of island biogeography, sample-area effect, and habitat diversity hypothesis. Location: Lake of the Woods, Canada. Taxon: Vascular plants Methods: Vascular plant species diversity was inventoried on 30 islands, organized into two island sets. Each island set contained four size classes that varied in degree of fragmentation while controlling for the sample-area effect (small island set: 8×0.1-ha, 4×0.2-ha, 2×0.4-ha, and 1×0.8-ha islands; large island set: identical pattern utilizing 1.0-ha to 8.0-ha islands). Fragmentation effects were then examined using SLOSS-based analyses, addressing whether single large or several small islands contained more species: (1) direct comparisons of species and habitat richness across size classes; (2) extrapolations of species-area relationships; and (3) analyses of species and habitat accumulation curves. Multigroup path analysis was next used to quantify effects of habitat diversity, island area, and isolation on species richness for both island sets. Finally, pairwise and multiple-site dissimilarity was estimated for both species and habitats across 0.1-ha and 1.0-ha islands to investigate whether: (1) variation in species composition was related to habitat composition; and (2) species dissimilarity increased with inter-island distance. Results: SLOSS-based analyses indicated that several small islands contained more species than single large islands in both island sets. This pattern was also observed for habitats, but only in the small islands set. Path analysis suggested that island area had significant direct and indirect effects (mediated by habitat diversity) on species richness. Habitat diversity and island isolation had significant positive and negative effects on species richness, respectively, independent of island area. Species and habitat dissimilarities were significantly related across 0.1-ha but not 1.0-ha islands, and showed no relationship to inter-island distance. Main Conclusions: The overall positive relationship between fragmentation and species richness may be attributed to greater habitat diversity and increased species dissimilarity across smaller islands relative to larger islands. However, negative isolation effects indicate that landscape configuration is still an important conservation consideration. These results each align with different predictions of the theory of island biogeography, sample-area effect, and habitat diversity hypothesis, questioning the exclusivity of these theoretical frameworks.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.