7th International Symposium on Fish Parasites
... probability of predation by birds. Broodsac banding pattern and colour (green, yellow to red/brown) have traditionally formed part of the taxonomic criteria for the genus. In this study, sequence divergence of the 5.8S rDNA gene and associated internal transcribed spacers (ITS1 and ITS2) in two of t ...
... probability of predation by birds. Broodsac banding pattern and colour (green, yellow to red/brown) have traditionally formed part of the taxonomic criteria for the genus. In this study, sequence divergence of the 5.8S rDNA gene and associated internal transcribed spacers (ITS1 and ITS2) in two of t ...
Biodiversity - HCC Learning Web
... ecosystems (forests and grasslands) are the first to be modified by humans. Pressures to modify the environment are greatest in areas with high population density. ...
... ecosystems (forests and grasslands) are the first to be modified by humans. Pressures to modify the environment are greatest in areas with high population density. ...
Competition and the Structure of Granivore
... of Arizona, where rainfall and seed pro duction are most bountiful and predict able. Estimates of ant and rodent numbers and biomass also vary directly with pro ductivity. Within each of the t w o major taxa, the number of c o m m o n species that occur together in a local habitat is signifi can ...
... of Arizona, where rainfall and seed pro duction are most bountiful and predict able. Estimates of ant and rodent numbers and biomass also vary directly with pro ductivity. Within each of the t w o major taxa, the number of c o m m o n species that occur together in a local habitat is signifi can ...
PDF - Tylianakis Lab Group
... Numerous Neotropical studies of biodiversity in coffee and cacao agroforests provide a sound foundation (Komar 2006), but research in other agroecosystems (particularly traditional mixed agroforests) is especially important because some of these studies (e.g., Naidoo 2004) have found patterns contra ...
... Numerous Neotropical studies of biodiversity in coffee and cacao agroforests provide a sound foundation (Komar 2006), but research in other agroecosystems (particularly traditional mixed agroforests) is especially important because some of these studies (e.g., Naidoo 2004) have found patterns contra ...
Pacific Tailed Frog
... Maintain clean and stable cobble/boulder gravel substrates, natural step-pool channel morphology, and stream temperatures within the tolerance limits of the species. Silt generating activities and runoff should be appropriately managed to reduce contaminants and sediment loading to receiving waters. ...
... Maintain clean and stable cobble/boulder gravel substrates, natural step-pool channel morphology, and stream temperatures within the tolerance limits of the species. Silt generating activities and runoff should be appropriately managed to reduce contaminants and sediment loading to receiving waters. ...
Limits to evolution at range margins: when and why does adaptation
... [17,18]. These models are important because they link population ecology with genetics in that population density is a function of how closely the trait mean matches the trait optimum at that point on the gradient. In the Kirkpatrick and Barton model [18], when the population tracks the trait optimu ...
... [17,18]. These models are important because they link population ecology with genetics in that population density is a function of how closely the trait mean matches the trait optimum at that point on the gradient. In the Kirkpatrick and Barton model [18], when the population tracks the trait optimu ...
Generalist predators, food web complexities and - UvA-DARE
... (parasitic wasps that parasitize parasitized prey). Hyperpredation can in fact be classified as apparent competition between the alternative prey and the specialist natural enemy. Predation of specialist natural enemies by hyperpredators will release the pest of the specialist natural enemy from con ...
... (parasitic wasps that parasitize parasitized prey). Hyperpredation can in fact be classified as apparent competition between the alternative prey and the specialist natural enemy. Predation of specialist natural enemies by hyperpredators will release the pest of the specialist natural enemy from con ...
Evenness drives consistent diversity effects in intensive grassland
... richness in the simplex. (a) Each point in the tetrahedron represents a community with its position determined by its sown relative abundance pattern (P1, P2, P3, P4). Communities vary in sown evenness, with the most even community at the centroid, where all s species are equally represented. The co ...
... richness in the simplex. (a) Each point in the tetrahedron represents a community with its position determined by its sown relative abundance pattern (P1, P2, P3, P4). Communities vary in sown evenness, with the most even community at the centroid, where all s species are equally represented. The co ...
human influences on tropical forest wildlife
... complex interactions between species, the effects of which may not be noticeable in the short term. Finally, logging cannot be examined in isolation from other forms of forest disturbance. The creation of logging camps, logging roads, and skidding trails generates greater demand for bushmeat and acc ...
... complex interactions between species, the effects of which may not be noticeable in the short term. Finally, logging cannot be examined in isolation from other forms of forest disturbance. The creation of logging camps, logging roads, and skidding trails generates greater demand for bushmeat and acc ...
Plant coexistence and the niche
... to coexist is a major unresolved question in community ecology. The classical explanation, that each species occupies its own niche, seems at first unlikely because most plants require the same set of resources and acquire these in a limited number of ways. However, recent studies, although few in n ...
... to coexist is a major unresolved question in community ecology. The classical explanation, that each species occupies its own niche, seems at first unlikely because most plants require the same set of resources and acquire these in a limited number of ways. However, recent studies, although few in n ...
Introducing non-trophic interactions in food webs
... Do non-trophic interactions have a structure? What are the dynamical consequences of integrating these interactions at the scale of the system? ...
... Do non-trophic interactions have a structure? What are the dynamical consequences of integrating these interactions at the scale of the system? ...
What is a Plant Community?
... pattern, we should focus on process and ask which processes are responsible for structuring the living world. If processes are significant in structuring particular systems, we can then regard the community as an entity with unique ...
... pattern, we should focus on process and ask which processes are responsible for structuring the living world. If processes are significant in structuring particular systems, we can then regard the community as an entity with unique ...
Final Report DEB97-07551, DEB97-07664
... rich assemblage of long-term research plots in and near the Duke Forest and the North Carolina Botanical Garden, and has thereby enhanced the value of these forests as a model system for the study of succession. In September 1996, many of the long-term plots that had been previously used in this stu ...
... rich assemblage of long-term research plots in and near the Duke Forest and the North Carolina Botanical Garden, and has thereby enhanced the value of these forests as a model system for the study of succession. In September 1996, many of the long-term plots that had been previously used in this stu ...
Issues for prioritisation
... There needs to be sound demonstration that the nominated EC is likely to meet at least one (preferably more) of the six listing criteria. The proposed conservation status is considered on a relative basis to the rest of each year’s nomination pool*. Nominations that lack information and adequate/hig ...
... There needs to be sound demonstration that the nominated EC is likely to meet at least one (preferably more) of the six listing criteria. The proposed conservation status is considered on a relative basis to the rest of each year’s nomination pool*. Nominations that lack information and adequate/hig ...
How many parasites? - Princeton University
... Erwin’s (12) work on beetles in tropical forest canopies provided a dramatic illustration of our lack of comprehension of how many extant species exist. Erwin’s initial estimates suggested there might be as many as 30 million species of beetles in the world’s tropical forests [considerably more than ...
... Erwin’s (12) work on beetles in tropical forest canopies provided a dramatic illustration of our lack of comprehension of how many extant species exist. Erwin’s initial estimates suggested there might be as many as 30 million species of beetles in the world’s tropical forests [considerably more than ...
Framework for Prioritisation of Ecological Community (EC
... There needs to be sound demonstration that the nominated EC is likely to meet at least one (preferably more) of the six listing criteria. The proposed conservation status is considered on a relative basis to the rest of each year’s nomination pool*. Nominations that lack information and adequate/hig ...
... There needs to be sound demonstration that the nominated EC is likely to meet at least one (preferably more) of the six listing criteria. The proposed conservation status is considered on a relative basis to the rest of each year’s nomination pool*. Nominations that lack information and adequate/hig ...
Marine Seaweed Invasions – Fucus Sofia A. Wikström
... Biological invasions are an important issue of global change and an increased understanding of invasion processes is of crucial importance for both conservation managers and international trade. In this thesis, I have studied the invasion of the brown seaweed Fucus evanescens, to investigate the fat ...
... Biological invasions are an important issue of global change and an increased understanding of invasion processes is of crucial importance for both conservation managers and international trade. In this thesis, I have studied the invasion of the brown seaweed Fucus evanescens, to investigate the fat ...
here
... prickly pear cactus Opuntia echios and the non-endemic native tree Bursera graveolens in the lowland. The lowland and highland networks were, to some extent, coupled; some species of Opuntia, characteristic of the lowlands, were found in the bird samples from the highlands, suggesting that birds mak ...
... prickly pear cactus Opuntia echios and the non-endemic native tree Bursera graveolens in the lowland. The lowland and highland networks were, to some extent, coupled; some species of Opuntia, characteristic of the lowlands, were found in the bird samples from the highlands, suggesting that birds mak ...
Pollination biology of the crypto-viviparous Avicennia species
... by ants, wasps, bugs, flies, bee-flies, cantherid beetles, and moths but the most common visitor is Apis mellifera. Tomlinson (1986) described that A. alba, A. marina and A. officinalis have very similar flowers and hence may well be served by the same class, if not the same species of pollinators; ...
... by ants, wasps, bugs, flies, bee-flies, cantherid beetles, and moths but the most common visitor is Apis mellifera. Tomlinson (1986) described that A. alba, A. marina and A. officinalis have very similar flowers and hence may well be served by the same class, if not the same species of pollinators; ...
Non-Indigenous Species
... to 18 documented species), followed by fish (13 species) and then macrophytes (10 species). The number of marine NIS recorded from Maltese waters to date may be due to the fact that only taxa with well‐known taxonomy or taxa that are large, conspicuous and hence easily identifiable ...
... to 18 documented species), followed by fish (13 species) and then macrophytes (10 species). The number of marine NIS recorded from Maltese waters to date may be due to the fact that only taxa with well‐known taxonomy or taxa that are large, conspicuous and hence easily identifiable ...
Assisted colonization as a climate change adaptation tool
... Abstract Assisted colonization is a form of conservation translocation which introduces species at risk from extinction to new habitats, beyond their current range, in anticipation of more suitable conditions. Identifying which species, communities and ecosystems may benefit most from assisted colon ...
... Abstract Assisted colonization is a form of conservation translocation which introduces species at risk from extinction to new habitats, beyond their current range, in anticipation of more suitable conditions. Identifying which species, communities and ecosystems may benefit most from assisted colon ...
(Anura, Rhacophoridae) with an Updated Anuran Species List for
... local colonization and may not indicate that this species was previously absent from the forest at Danum Valley Field Center, but rather that it did not occupy the previously sampled sections of the study streams. The same pattern of colonization has been observed by others conducting repeated sampl ...
... local colonization and may not indicate that this species was previously absent from the forest at Danum Valley Field Center, but rather that it did not occupy the previously sampled sections of the study streams. The same pattern of colonization has been observed by others conducting repeated sampl ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.