LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 16

Search options

  1. Article ; Online: Spatial and environmental factors contributing to patterns in arboreal and terrestrial oribatid mite diversity across spatial scales.

    Lindo, Zoë / Winchester, Neville N

    Oecologia

    2009  Volume 160, Issue 4, Page(s) 817–825

    Abstract: Understanding the conditions under which species traits, species-environment relationships, and the spatial structure of the landscape interact to shape local communities requires quantifying the relative contributions of space and the environment on ... ...

    Abstract Understanding the conditions under which species traits, species-environment relationships, and the spatial structure of the landscape interact to shape local communities requires quantifying the relative contributions of space and the environment on community composition. Using analogous sampling of arboreal and terrestrial oribatid mite communities across a large spatial scale in a temperate rainforest, we quantified the variation in oribatid mite community structure relating to environmental and spatial factors, and tested whether terrestrial and arboreal communities demonstrated a difference in their patterns of community composition based on the assumption of differences in dispersal potential. The expectation that terrestrial oribatid mite communities are spatially structured while arboreal communities are environmentally structured was supported by our analyses at the level of variation in beta diversity, but not by assessing beta diversity itself. We found that terrestrial oribatid mite communities with active, cursorial dispersal demonstrate spatial constraint consistent with reduced long-distance dispersal opportunities and high environmental dissimilarity among sites. Arboreal communities, which potentially disperse long distances via passive aerial vectors, show a spatial signature associated with patterns in beta diversity and a correlation with environmental dissimilarities among sites. In the arboreal community, moisture content of the substrate, total tree height, and average sampled branch height were significant factors explaining beta diversity patterns. For ground-dwelling species, predator abundance and soil type were important local determinants of community variability. Both communities showed clear spatial structuring, suggesting that dispersal limitation continues to influence community composition across multiple forest watershed locations. Our results provide evidence of dispersal-maintained diversity patterns in response to local environmental factors in arboreal and terrestrial communities. The relative importance of stochastic dispersal assembly may be dependent on strong deterministic effects associated with micro-site and macro-site environmental variation, particularly across large spatial scales.
    MeSH term(s) Animals ; Biodiversity ; British Columbia ; Demography ; Ecosystem ; Environment ; Mites/physiology ; Models, Biological ; Species Specificity ; Trees
    Language English
    Publishing date 2009-05-02
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 123369-5
    ISSN 1432-1939 ; 0029-8549
    ISSN (online) 1432-1939
    ISSN 0029-8549
    DOI 10.1007/s00442-009-1348-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: Importance of Proximity to Foraging Areas for the Pacific Great Blue Heron (Ardea herodias fannini) Nesting in a Developed Landscape

    Knight, Elly C / Vennesland Ross G / Winchester Neville N

    Waterbirds. 2016 June, v. 39, no. 2

    2016  

    Abstract: Habitat loss due to human development is a threat to colonial waterbird species, which require nesting habitat in proximity to productive aquatic foraging areas to ensure reproductive success. When development of habitat occurs, waterbirds must either ... ...

    Abstract Habitat loss due to human development is a threat to colonial waterbird species, which require nesting habitat in proximity to productive aquatic foraging areas to ensure reproductive success. When development of habitat occurs, waterbirds must either tolerate the changes or relocate nesting colonies to habitat elsewhere. Land cover and nesting colony data were used to study the implications of development for the Pacific Great Blue Heron (Ardea herodias fannini). Colonies were closer to major foraging areas than expected by chance, but were not farther from human development than expected by chance, suggesting that Pacific Great Blue Herons will tolerate some development to remain close to major foraging areas. There was no relationship between distance to human development and colony productivity; however, distance to major foraging area was a significant predictor of productivity, which suggests Pacific Great Blue Herons may prioritize proximity to foraging areas because it is critical for reproductive success. Given their demonstrated preference for proximity to foraging areas, and high levels of development near these areas, relocation away from human development may not be an option for nesting Pacific Great Blue Herons in south coastal British Columbia, Canada, because potential nesting habitat availability was most restricted within 5 km of major foraging areas. Future management strategies for this species, and colonial waterbirds in general, should prioritize conservation of nesting habitat near major foraging areas to maximize future reproductive success.
    Keywords Ardea herodias ; anthropogenic activities ; foraging ; habitat destruction ; habitats ; land cover ; landscapes ; nesting ; reproductive success ; water birds ; British Columbia
    Language English
    Dates of publication 2016-06
    Size p. 165-174.
    Publishing place Waterbirds Society
    Document type Article
    ZDB-ID 2159270-6
    ISSN 1524-4695
    ISSN 1524-4695
    DOI 10.1675%2F063.039.0207
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  3. Article ; Online: Spatial and environmental factors contributing to patterns in arboreal and terrestrial oribatid mite diversity across spatial scales

    Lindo, Zoë / Winchester, Neville N.

    Oecologia. 2009 July, v. 160, no. 4 p.817-825

    2009  

    Abstract: Understanding the conditions under which species traits, species–environment relationships, and the spatial structure of the landscape interact to shape local communities requires quantifying the relative contributions of space and the environment on ... ...

    Abstract Understanding the conditions under which species traits, species–environment relationships, and the spatial structure of the landscape interact to shape local communities requires quantifying the relative contributions of space and the environment on community composition. Using analogous sampling of arboreal and terrestrial oribatid mite communities across a large spatial scale in a temperate rainforest, we quantified the variation in oribatid mite community structure relating to environmental and spatial factors, and tested whether terrestrial and arboreal communities demonstrated a difference in their patterns of community composition based on the assumption of differences in dispersal potential. The expectation that terrestrial oribatid mite communities are spatially structured while arboreal communities are environmentally structured was supported by our analyses at the level of variation in beta diversity, but not by assessing beta diversity itself. We found that terrestrial oribatid mite communities with active, cursorial dispersal demonstrate spatial constraint consistent with reduced long-distance dispersal opportunities and high environmental dissimilarity among sites. Arboreal communities, which potentially disperse long distances via passive aerial vectors, show a spatial signature associated with patterns in beta diversity and a correlation with environmental dissimilarities among sites. In the arboreal community, moisture content of the substrate, total tree height, and average sampled branch height were significant factors explaining beta diversity patterns. For ground-dwelling species, predator abundance and soil type were important local determinants of community variability. Both communities showed clear spatial structuring, suggesting that dispersal limitation continues to influence community composition across multiple forest watershed locations. Our results provide evidence of dispersal-maintained diversity patterns in response to local environmental factors in arboreal and terrestrial communities. The relative importance of stochastic dispersal assembly may be dependent on strong deterministic effects associated with micro-site and macro-site environmental variation, particularly across large spatial scales.
    Keywords Sarcoptiformes ; community structure ; environmental factors ; forested watersheds ; landscapes ; rain forests ; soil types ; species diversity ; tree height ; water content ; British Columbia ; Oribatida
    Language English
    Dates of publication 2009-07
    Size p. 817-825.
    Publishing place Springer-Verlag
    Document type Article ; Online
    Note Includes references ; 2019-12-06
    ZDB-ID 123369-5
    ISSN 1432-1939 ; 0029-8549
    ISSN (online) 1432-1939
    ISSN 0029-8549
    DOI 10.1007/s00442-009-1348-3
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  4. Article: Spatial and environmental factors contributing to patterns in arboreal and terrestrial oribatid mite diversity across spatial scales

    Lindo, Zoë / Winchester, Neville N

    Oecologia. 2009 July, v. 160, no. 4

    2009  

    Abstract: Understanding the conditions under which species traits, species-environment relationships, and the spatial structure of the landscape interact to shape local communities requires quantifying the relative contributions of space and the environment on ... ...

    Abstract Understanding the conditions under which species traits, species-environment relationships, and the spatial structure of the landscape interact to shape local communities requires quantifying the relative contributions of space and the environment on community composition. Using analogous sampling of arboreal and terrestrial oribatid mite communities across a large spatial scale in a temperate rainforest, we quantified the variation in oribatid mite community structure relating to environmental and spatial factors, and tested whether terrestrial and arboreal communities demonstrated a difference in their patterns of community composition based on the assumption of differences in dispersal potential. The expectation that terrestrial oribatid mite communities are spatially structured while arboreal communities are environmentally structured was supported by our analyses at the level of variation in beta diversity, but not by assessing beta diversity itself. We found that terrestrial oribatid mite communities with active, cursorial dispersal demonstrate spatial constraint consistent with reduced long-distance dispersal opportunities and high environmental dissimilarity among sites. Arboreal communities, which potentially disperse long distances via passive aerial vectors, show a spatial signature associated with patterns in beta diversity and a correlation with environmental dissimilarities among sites. In the arboreal community, moisture content of the substrate, total tree height, and average sampled branch height were significant factors explaining beta diversity patterns. For ground-dwelling species, predator abundance and soil type were important local determinants of community variability. Both communities showed clear spatial structuring, suggesting that dispersal limitation continues to influence community composition across multiple forest watershed locations. Our results provide evidence of dispersal-maintained diversity patterns in response to local environmental factors in arboreal and terrestrial communities. The relative importance of stochastic dispersal assembly may be dependent on strong deterministic effects associated with micro-site and macro-site environmental variation, particularly across large spatial scales.
    Keywords Oribatida ; branches ; community structure ; environmental factors ; forested watersheds ; landscapes ; predators ; rain forests ; soil types ; species diversity ; trees ; water content
    Language English
    Dates of publication 2009-07
    Size p. 817-825.
    Publisher Springer-Verlag
    Publishing place Berlin/Heidelberg
    Document type Article
    ZDB-ID 123369-5
    ISSN 1432-1939 ; 0029-8549
    ISSN (online) 1432-1939
    ISSN 0029-8549
    DOI 10.1007/s00442-009-1348-3
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  5. Article: Scale dependent diversity patterns in arboreal and terrestrial oribatid mite (Acari: Oribatida) communities

    Lindo, Zoë / Winchester, Neville N

    Ecography. 2008 Feb., v. 31, no. 1

    2008  

    Abstract: In naturally fragmented, isolated, or patchily distributed habitats that contain non-vagile organisms, we expect dispersal to be limited, and patterns of diversity to differ from similar, yet continuous habitats. We explored the alpha-beta-gamma ... ...

    Abstract In naturally fragmented, isolated, or patchily distributed habitats that contain non-vagile organisms, we expect dispersal to be limited, and patterns of diversity to differ from similar, yet continuous habitats. We explored the alpha-beta-gamma relationship and community composition of oribatid mites (Acari: Oribatida) inhabiting spatially discrete canopy suspended soils, and compared the patterns of diversity with the continuous forest floor soils over two years. We explored dispersal limitation for oribatid mites in the canopy by using additive partitioning of species richness at multiple spatial scales. ANOSIM was used to demonstrate differences in oribatid mite community composition between the canopy and forest floor habitats over different sampling periods. Community composition of oribatid mites differed significantly between canopy and forest floor habitats, by season and yearly sampling period. Oribatid mite richness and abundance were positively correlated with substrate moisture content, particularly in the canopy. Richness and abundance of ground oribatid mites was greater in September than in June, a trend that is reversed in the canopy, suggesting canopy oribatid mite species may have altered life histories to take advantage of earlier moisture conditions. Alpha diversity of oribatid mites in the canopy was lower than the ground at all sampling levels, and not significantly different from a random distribution in either habitat. Beta diversity was greater than expected from a random distribution at the patch- and tree-level in the canopy suggesting dispersal limitation associated with physical tree-to-tree dispersal barriers, and limited dispersal among patches within a tree. Beta diversity at the tree-level was the largest contribution to overall species richness in both canopy and ground habitats, and was also greater than expected on the ground. These results suggest that factors other than physical dispersal barriers, such as aggregation, habitat availability, and environmental factors (moisture), may limit the distribution of species in both habitats.
    Keywords Oribatida ; biogeography ; community structure ; correlation ; environmental factors ; forest canopy ; forest habitats ; forest soils ; life history ; species diversity ; trees ; water content
    Language English
    Dates of publication 2008-02
    Size p. 53-60.
    Publisher Blackwell Publishing Ltd
    Publishing place Copenhagen
    Document type Article
    ZDB-ID 1112659-0
    ISSN 0906-7590
    ISSN 0906-7590
    DOI 10.1111/j.2007.0906-7590.05320.x
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  6. Article: Effect of disturbance and distance from a riparian corridor on spiders in a temperate rainforest

    Copley, Claudia R / Winchester, Neville N

    Canadian journal of forest research. 2010 May, v. 40, no. 5

    2010  

    Abstract: In anthropogenically disturbed forested riparian ecosystems that contain vagile organisms, we expect dispersal to be a factor that determines patterns of diversity that differ from similar, but continuous, undisturbed habitats. We studied the effects of ... ...

    Abstract In anthropogenically disturbed forested riparian ecosystems that contain vagile organisms, we expect dispersal to be a factor that determines patterns of diversity that differ from similar, but continuous, undisturbed habitats. We studied the effects of habitat alteration on community composition by characterizing the spider assemblage of a riparian corridor in an ancient forest and a regenerating coniferous forest in the Carmanah Valley, Vancouver Island, British Columbia. Spiders were collected over a 15 month period using Malaise traps set along transects perpendicular to Carmanah Creek. We recorded 76 genera and 113 species representing 23 families. In both the regenerating coniferous forest and the ancient forest, a large proportion of the species were of the family Linyphiidae. Species abundance was similar in the two habitats but diversity was greater in the regenerating coniferous forest. The ancient forest was dominated by the web-building guild. Spatial autocorrelation analysis revealed no overall pattern in the species assemblages relative to the riparian corridor. Bray–Curtis similarity measure and principal components analysis results indicate that spider assemblages in the two habitats were significantly different in composition. These results suggest that habitat changes affect assemblages of spiders by altering dispersal, and these responses are evident a decade after disturbance.
    Keywords Arachnida ; habitats ; rain forests ; coniferous forests ; old-growth forests ; secondary forests ; correlation ; species diversity ; spatial data ; habitat destruction ; habitat fragmentation ; riparian areas ; community structure ; population size ; British Columbia
    Language English
    Dates of publication 2010-05
    Size p. 904-916.
    Document type Article
    Note Summary in French.
    ZDB-ID 430062-2
    ISSN 0045-5067
    ISSN 0045-5067
    DOI 10.1139/X10-043
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  7. Article: Spatial and functional structure of an entire ant assemblage in a lowland Panamanian rainforest

    Leponce, Maurice / Corbara, Bruno / Delabie, Jacques H.C. / Orivel, Jérôme / Aberlenc, Henri-Pierre / Bail, Johannes / Barrios, Hector / Campos, Ricardo I. / do Nascimento, Ivan Cardoso / Compin, Arthur / Didham, Raphaël K. / Floren, Andreas / Medianero, Enrique / Ribeiro, Sérvio P. / Roisin, Yves / Schmidl, Juergen / Tishechkin, Alexey K. / Winchester, Neville N. / Basset, Yves /
    Dejean, Alain

    Gesellschaft für Ökologie Basic and applied ecology. 2021 Nov., v. 56

    2021  

    Abstract: Ants are a major ecological group in tropical rainforests. Few studies in the Neotropics have documented the distribution of ants from the ground to the canopy, and none have included the understorey. A previous analysis of an intensive arthropod study ... ...

    Abstract Ants are a major ecological group in tropical rainforests. Few studies in the Neotropics have documented the distribution of ants from the ground to the canopy, and none have included the understorey. A previous analysis of an intensive arthropod study in Panama, involving 11 sampling methods, showed that the factors influencing ant β diversity (i.e., changes in assemblage composition) were, in decreasing order of importance, the vertical (height), temporal (season), and horizontal (geographic distance) dimensions. In the present study, we went one step further and aimed (1) to identify the best sampling methods to study the entire ant assemblage across the three strata, (2) to test if all strata show a similar horizontal β diversity and (3) to analyze the functional structure of the entire ant assemblage. We identified 405 ant species from 11 subfamilies and 68 genera. Slightly more species were sampled in the canopy than on the ground; they belonged to distinct sub-assemblages. The understorey fauna was mainly a mixture of species found in the other two strata. The horizontal β diversity between sites was similar for the three strata. About half of the ant species foraged in two (29%) or three (25%) strata. A single method, aerial flight interception traps placed alongside tree trunks, acting as arboreal pitfall traps, collected half of the species and reflected the vertical stratification. Using the functional traits approach, we observed that generalist species with mid-sized colonies were by far the most numerous (31%), followed by ground- or litter-dwelling species, either specialists (20%), or generalists (16%), and arboreal species, either generalists (19%) or territorially dominant (8%), and finally army ants (5%). Our results reinforce the idea that a proper understanding of the functioning of ant assemblages requires the inclusion of arboreal ants in survey programs.
    Keywords Neotropics ; applied ecology ; arthropods ; canopy ; fauna ; flight ; surveys ; trees ; understory ; Panama
    Language English
    Dates of publication 2021-11
    Size p. 32-44.
    Publishing place Elsevier GmbH
    Document type Article
    ZDB-ID 2026806-3
    ISSN 1439-1791
    ISSN 1439-1791
    DOI 10.1016/j.baae.2021.06.007
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  8. Article: Nested patterns of community assembly in the colonisation of artificial canopy habitats by oribatid mites

    Lindo, Zoë / Winchester, Neville N / Didham, Raphael K

    Oikos, acta oecologica Scandinavica. 2008 Dec., v. 117, no. 12

    2008  

    Abstract: An observed species-area relationship (SAR) in assemblages of oribatid mites inhabiting natural canopy habitats (suspended soils) led to an experimental investigation of how patch size, height in canopy and moisture influence the species richness, ... ...

    Abstract An observed species-area relationship (SAR) in assemblages of oribatid mites inhabiting natural canopy habitats (suspended soils) led to an experimental investigation of how patch size, height in canopy and moisture influence the species richness, abundance and community composition of arboreal oribatid mites. Colonisation by oribatid mites on 90 artificial canopy habitats (ACHs) of three sizes placed at each of three heights on the trunks of ten western redcedar trees was recorded over a 1-year period. Fifty-nine oribatid mite species colonised the ACHs, and richness increased with the moisture content and size of the habitat patch. Oribatid mite species richness and abundance, and ACH moisture content decreased with increasing ACH height in the canopy. Patterns in the species richness and community composition of ACHs were non-random and demonstrated a significant nested pattern. Correlations of patch size, canopy height and moisture content with community nestedness suggest that species-specific environmental tolerances combined with the differential dispersal abilities of species contributed to the non-random patterns of composition in these habitats. In line with the prediction that niche-selection filters out species from the regional pool that cannot tolerate environmental harshness, moisture-stressed ACHs in the high canopy had lower community variability than ACHs in the lower canopy. Colonising source pools to ACHs were almost exclusively naturally-occurring canopy sources, but low levels of colonisation from the forest floor were apparent at low heights within the ACH system. We conclude that stochastic dispersal dynamics within the canopy are crucial to understanding oribatid mite community structure in suspended soils, but that the relative importance of stochastic dispersal assembly may be dependent on a strong deterministic element to the environmental tolerances of individual species which drives non-random patterns of community assembly.
    Keywords Oribatida ; canopy ; community structure ; filters ; forest litter ; habitats ; prediction ; soil structure ; species dispersal ; species diversity ; trees ; water content
    Language English
    Dates of publication 2008-12
    Size p. 1856-1864.
    Publisher Blackwell Publishing Ltd
    Publishing place Oxford, UK
    Document type Article
    ZDB-ID 207359-6
    ISSN 0030-1299
    ISSN 0030-1299
    DOI 10.1111/j.1600-0706.2008.16920.x
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  9. Article: Two new species of oribatid mites (Acari: Oribatida) from Ethiopia, including a key to species of Pilobatella

    Ermilov, Sergey G / Winchester Neville N / Lowman Margaret M / Wassie Alemayehu

    Systematic and applied acarology. 2012 Aug., v. 17, no. 3

    2012  

    Abstract: Two new oribatid mite species, Austrocarabodes (Uluguroides) kluttzi Ermilov, Winchester, Lowman & Wassie sp. nov. (Carabodidae) and Pilobatella lowmanae Ermilov, Winchester & Wassie sp. nov. (Haplozetidae), are described from Afro-montane forests in the ...

    Abstract Two new oribatid mite species, Austrocarabodes (Uluguroides) kluttzi Ermilov, Winchester, Lowman & Wassie sp. nov. (Carabodidae) and Pilobatella lowmanae Ermilov, Winchester & Wassie sp. nov. (Haplozetidae), are described from Afro-montane forests in the northern highlands of Ethiopia. An identification key to all known species of Pilobatella is given. An annotated checklist of identified oribatid mite taxa sampled in this studyis presented. Fourteen species, six genera and three families are recorded for the first time from Ethiopia.
    Keywords Oribatida ; forests ; highlands ; mites ; new species ; taxonomic keys ; oribatid mites ; Austrocarabodes (Uluguroides) ; Pilobatella ; key ; checklist ; Ethiopia
    Language English
    Dates of publication 2012-08
    Size p. 301-317.
    Publishing place Systematic and Applied Acarology Society
    Document type Article
    ISSN 1362-1971
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  10. Article: Resident corticolous oribatid mites (Acari: Oribatida): Decay in community similarity with vertical distance from the ground

    LINDO, Zoëë / WINCHESTER Neville N

    Écoscience. 2007 June, v. 14, no. 2

    2007  

    Abstract: The decrease in community similarity was examined in corticolous oribatid mites (Acari: Oribatida) sampled along a 36-m vertical profile of 5 western redcedar trees in a temperate rainforest on Vancouver Island, Canada. Samples were collected every 2 m, ... ...

    Abstract The decrease in community similarity was examined in corticolous oribatid mites (Acari: Oribatida) sampled along a 36-m vertical profile of 5 western redcedar trees in a temperate rainforest on Vancouver Island, Canada. Samples were collected every 2 m, and all adult oribatid mites were identified to species. When compared to species recorded from previous ground/canopy sampling efforts in the same trees, the 62 corticolous species unequivocally support the separation of these 2 communities at 4m. All sampling heights contained canopy oribatid species, but only 0––4 m communities contained ground-dwelling oribatids. There was significant overall spatial autocorrelation and decay in community similarity with distance originating from species turnover at 4 m, suggesting limited range expansion of ground species into corticolous habitats. Community similarity, richness, and abundance of corticolous oribatid mite assemblages were not autocorrelated after 4 m above ground. Observed patterns at 4 m likely represent an environmental transition zone for ground-dwelling species, such as changes in moisture availability, rather than a physical dispersal barrier for individuals. We conclude that the trunk is not a dispersal corridor for ground species to colonize tree crowns and suggest that low similarity between nearest neighbouring sampling points, combined with the presence of immature and gravid oribatids, supports the assumption that corticolous oribatid mite assemblages are likely dispersal-limited residents.
    Keywords Oribatida ; adults ; autocorrelation ; canopy ; habitats ; mites ; rain forests ; trees ; community similarity ; corticolous habitats ; distance decay ; oribatid mites ; spatial autocorrelation ; temperate rainforest ; acariens oribatides ; autocorréélation spatiale ; diminution avec la distance ; forêt pluviale tempééréée ; habitats corticoles ; similaritéé des communitéés ; Canada
    Language English
    Dates of publication 2007-06
    Size p. 223-229.
    Publishing place ÉÉCOSCIENCE
    Document type Article
    ZDB-ID 2155785-8
    ISSN 1195-6860 ; 1195-6860
    ISSN (online) 1195-6860
    ISSN 1195-6860
    DOI 10.2980%2F1195-6860%282007%2914%5B223%3ARCOMAO%5D2.0.CO%3B2
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

To top