Title Variation in Low Intertidal Communities: Submerged vs
... amphipods and isopods was found to vary at different tidal levels and different times during the tidal cycle (Ingólfsson and Agnarsson, 2003). A study carried out in the rocky intertidal zone in Ireland found a significant trend of decreasing biodiversity with increasing shore height during periods ...
... amphipods and isopods was found to vary at different tidal levels and different times during the tidal cycle (Ingólfsson and Agnarsson, 2003). A study carried out in the rocky intertidal zone in Ireland found a significant trend of decreasing biodiversity with increasing shore height during periods ...
Recruitment facilitation can promote coexistence and buffer population growth in metacommunities
... recruitment rates in an intertidal metacommunity on the West coast of the US (Menge et al. 2009, 2011). Motivated by the discrepancy between classical theoretical predictions based on negative interactions and current empirical explanations based on positive interactions, we incorporated recruitment ...
... recruitment rates in an intertidal metacommunity on the West coast of the US (Menge et al. 2009, 2011). Motivated by the discrepancy between classical theoretical predictions based on negative interactions and current empirical explanations based on positive interactions, we incorporated recruitment ...
Toward an ecological synthesis: a case for habitat selection
... responsible for species coexistence, but provide one of the most convenient mechanisms for measuring competition, and the various community structures caused by competitive interactions. Other kinds of interactions, such as those between predators and prey, demonstrate that an understanding of the c ...
... responsible for species coexistence, but provide one of the most convenient mechanisms for measuring competition, and the various community structures caused by competitive interactions. Other kinds of interactions, such as those between predators and prey, demonstrate that an understanding of the c ...
relative effects of species composition and richness on ecosystem
... Species composition (i.e., the particular identity or assemblage of species) is another important and often confounding component of biodiversity that is more difficult to study. Most biodiversity research has not adequately separated composition effects from richness effects due to experimental des ...
... Species composition (i.e., the particular identity or assemblage of species) is another important and often confounding component of biodiversity that is more difficult to study. Most biodiversity research has not adequately separated composition effects from richness effects due to experimental des ...
Limnol. Oceanogr., 44(3, part 2), 1999, 950–97
... elsewhere and includes taxa that are among the most likely to have significant, detectable impacts. For both analyses, we included available information on categorical abundance (e.g., rare, common, abundant) in each source region, as indicated in the literature. This was used to test for relationsh ...
... elsewhere and includes taxa that are among the most likely to have significant, detectable impacts. For both analyses, we included available information on categorical abundance (e.g., rare, common, abundant) in each source region, as indicated in the literature. This was used to test for relationsh ...
Wulff 2005l - FSU Biology
... habitats. Distinctive sponge faunas of Caribbean coral reefs and mangroves seem to support the assumption that abiotic factors determine sponge diversity within habitats and faunal differences between habitats because these habitats differ greatly in abiotic characteristics and because lower species ...
... habitats. Distinctive sponge faunas of Caribbean coral reefs and mangroves seem to support the assumption that abiotic factors determine sponge diversity within habitats and faunal differences between habitats because these habitats differ greatly in abiotic characteristics and because lower species ...
PAI EO - Cornell College
... (BA) as defined by Boucot (1975); note that only the deeper end of this scale is shown, with BA 3.5=diverse coral-rich offshore communities; BA 4 = diverse brachiopod communities; BA 4.5 = ambocoeliid communities and BA 5 = high dominance leiorhynchid communities typical of dark gray to black shale. ...
... (BA) as defined by Boucot (1975); note that only the deeper end of this scale is shown, with BA 3.5=diverse coral-rich offshore communities; BA 4 = diverse brachiopod communities; BA 4.5 = ambocoeliid communities and BA 5 = high dominance leiorhynchid communities typical of dark gray to black shale. ...
Spatial and Temporal Dimensions of Biodiversity Dynamics
... by the life histories of the colonising species. Colonisers can be classified as the ecological types of selection r and K, according to the logistic rates of population growth. R-selected species maximise the intrinsic rate of population increase (r). Every time favourable conditions become effecti ...
... by the life histories of the colonising species. Colonisers can be classified as the ecological types of selection r and K, according to the logistic rates of population growth. R-selected species maximise the intrinsic rate of population increase (r). Every time favourable conditions become effecti ...
Network ecology: topological constraints on ecosystem dynamics
... topological ones. For example, a current key topic in ecology and conservation biology is how to link species and ecosystems ((66), i.e. what do species do in a forest, and what does the whole forest community do with its species). If the role of species is to be understood within a community contex ...
... topological ones. For example, a current key topic in ecology and conservation biology is how to link species and ecosystems ((66), i.e. what do species do in a forest, and what does the whole forest community do with its species). If the role of species is to be understood within a community contex ...
An experimental demonstration of direct behavioural
... and range in mass and SVL of lizards used in our study. There was no significant variation between species combinations in the difference in size between lizards comprising pairs (Table 2). We conducted trials between 1000 and 1700 hours in an order that ensured a similar number of trials in the mor ...
... and range in mass and SVL of lizards used in our study. There was no significant variation between species combinations in the difference in size between lizards comprising pairs (Table 2). We conducted trials between 1000 and 1700 hours in an order that ensured a similar number of trials in the mor ...
Scarab Beetle (Coleoptera: Scarabaeidae)
... The diversity of local dung-beetle communities is primarily influenced by vegetation cover, soil type and moisture, and resource (dung) availability (Doube 1987, Davis 2002). Since dung beetles have different preferences for dung of different mammals based on texture, the structure of dung-beetle co ...
... The diversity of local dung-beetle communities is primarily influenced by vegetation cover, soil type and moisture, and resource (dung) availability (Doube 1987, Davis 2002). Since dung beetles have different preferences for dung of different mammals based on texture, the structure of dung-beetle co ...
Chapter 10: Protected Matters under the EPBC Act
... The surveying of burrow entrances may be more profitable in warmer months as the species is more active in the warmer weather. Watching burrows in cooler times of the year may involve setting up motion-sensing cameras to ‘watch’ for longer periods. McAlpin (2001b) reports the optimum time of year fo ...
... The surveying of burrow entrances may be more profitable in warmer months as the species is more active in the warmer weather. Watching burrows in cooler times of the year may involve setting up motion-sensing cameras to ‘watch’ for longer periods. McAlpin (2001b) reports the optimum time of year fo ...
Commensalism relationships desert
... July 22, 2016, 03:56 An astounding number of mutualistic relationships occur between multicellular organisms and microorganisms. Termites are only able to eat wood because they have. Symbiotic Relationships Examples. There are many symbiotic relationships examples in nature. In fact, every living be ...
... July 22, 2016, 03:56 An astounding number of mutualistic relationships occur between multicellular organisms and microorganisms. Termites are only able to eat wood because they have. Symbiotic Relationships Examples. There are many symbiotic relationships examples in nature. In fact, every living be ...
Ant Community Dynamics and the Effects of Global Warming
... potential for these altered levels of foraging to cause shifts in rates of ant-mediated seed dispersal, providing an indirect mechanisms via which climatic warming may alter the plant community. Despite the observed shifts in ant activity, however, I did not find rates of seed dispersal to vary acro ...
... potential for these altered levels of foraging to cause shifts in rates of ant-mediated seed dispersal, providing an indirect mechanisms via which climatic warming may alter the plant community. Despite the observed shifts in ant activity, however, I did not find rates of seed dispersal to vary acro ...
Criteria and Indicators for Assessing the Sustainability
... broad concept and, given the huge diversity of life in tropical forests, it is impossible to make rapid direct assessments of biodiversity in forests in anything other than a superficial manner. It is likely that there will be limited skilled human resources and time for biodiversity assessment in a ...
... broad concept and, given the huge diversity of life in tropical forests, it is impossible to make rapid direct assessments of biodiversity in forests in anything other than a superficial manner. It is likely that there will be limited skilled human resources and time for biodiversity assessment in a ...
white-clawed crayfish
... White-clawed crayfish have always been a source of food for otters, water birds and large fish such as carp and eel. However, since the late 20th Century the species has had to contend with increased water pollution, loss of habitat and the introduction to our waterways of at least five other larger ...
... White-clawed crayfish have always been a source of food for otters, water birds and large fish such as carp and eel. However, since the late 20th Century the species has had to contend with increased water pollution, loss of habitat and the introduction to our waterways of at least five other larger ...
Intraspecific trait variation and colonization sequence alter
... priority effects (IPEs) allow early arrivers to limit the growth or establishment of later arrivers, even when competitively inferior on a per-capita basis. Through their effects on genes and traits, IPEs can alter short-term growth and long-term evolutionary change in single species metapopulations ...
... priority effects (IPEs) allow early arrivers to limit the growth or establishment of later arrivers, even when competitively inferior on a per-capita basis. Through their effects on genes and traits, IPEs can alter short-term growth and long-term evolutionary change in single species metapopulations ...
Species evenness and productivity in experimental plant communities
... small numbers or has small individuals is unlikely to contribute much to biomass either directly or through species interactions (‘‘mass ratio hypothesis’’; Grime 1998). This hypothesis was supported by an experimental study: when communities with the same three species were compared, those with a g ...
... small numbers or has small individuals is unlikely to contribute much to biomass either directly or through species interactions (‘‘mass ratio hypothesis’’; Grime 1998). This hypothesis was supported by an experimental study: when communities with the same three species were compared, those with a g ...
Success and its limits among structural models of complex food webs
... been developed to address the issue of intervality in the niche model but it, too, has not been tested against many other network properties. This leaves open considerable uncertainty as to which models best fit the data and therefore should be relied upon for further interpretation and exploration. ...
... been developed to address the issue of intervality in the niche model but it, too, has not been tested against many other network properties. This leaves open considerable uncertainty as to which models best fit the data and therefore should be relied upon for further interpretation and exploration. ...
ATOLL RESEARCH BULLETIN NO. 477 SPONGE PREDATORS
... sponges inhabit crevices in the reef because they are refuges from the attentions of generalist herbivores, such as parrotfish of the genus Sparisoma in the Caribbean (Wulff, 1997a) and of the genus Scarus, and from omnivores such as large smooth pufferfish of the genus Arothron in the tropical eas ...
... sponges inhabit crevices in the reef because they are refuges from the attentions of generalist herbivores, such as parrotfish of the genus Sparisoma in the Caribbean (Wulff, 1997a) and of the genus Scarus, and from omnivores such as large smooth pufferfish of the genus Arothron in the tropical eas ...
Community assembly, coexistence and the environmental filtering
... of tolerance in the absence of other interacting species (such as potential competitors or natural enemies), although these studies are rarely performed in this context. Many community assembly analyses that report environmental filtering may in fact be describing the combined effect of both biotic a ...
... of tolerance in the absence of other interacting species (such as potential competitors or natural enemies), although these studies are rarely performed in this context. Many community assembly analyses that report environmental filtering may in fact be describing the combined effect of both biotic a ...
Quino Checkerspot Butterfly - Journal of Research on the Lepidoptera
... nominotypical editha in size but differs from that subspecies by greater development of black scaling and greater reduction of the orange/red scaling relative to the cream scaling. There are additional defining larval characteristics, but these have not been systematically described for all subspeci ...
... nominotypical editha in size but differs from that subspecies by greater development of black scaling and greater reduction of the orange/red scaling relative to the cream scaling. There are additional defining larval characteristics, but these have not been systematically described for all subspeci ...
Is Taxonomic Diversity Enough? The Role of Phylogenetic
... grasslands and montane forests (Gerhold et al. 2003 and Kunstler et al. 2012). Similarly, more productive habitats often allow for a greater number of functionally-similar organisms than resource limited habitats. Therefore, productive habitats often have a lower ratio of functional ...
... grasslands and montane forests (Gerhold et al. 2003 and Kunstler et al. 2012). Similarly, more productive habitats often allow for a greater number of functionally-similar organisms than resource limited habitats. Therefore, productive habitats often have a lower ratio of functional ...
Meta-ecosystems: a theoretical framework for a spatial ecosystem
... Thus, this equation can be interpreted as a source–sink constraint between ecosystem compartments. The combination of the two types of source–sink constraints (within and between ecosystem compartments) imposes a specific pattern of circulation of nutrient in the meta-ecosystem as a whole. For insta ...
... Thus, this equation can be interpreted as a source–sink constraint between ecosystem compartments. The combination of the two types of source–sink constraints (within and between ecosystem compartments) imposes a specific pattern of circulation of nutrient in the meta-ecosystem as a whole. For insta ...
Allee effects, extinctions, and chaotic transients in simple population
... effect has been widely recognized in conservation biology (Dennis 1989; Fowler & Baker 1991; Courchamp et al. 1999; Stephens & Sutherland 1999; Stephens et al. 1999; Lande et al. in press). Population with fluctuating dynamics and a strong Allee effect are especially vulnerable to extinction as the ...
... effect has been widely recognized in conservation biology (Dennis 1989; Fowler & Baker 1991; Courchamp et al. 1999; Stephens & Sutherland 1999; Stephens et al. 1999; Lande et al. in press). Population with fluctuating dynamics and a strong Allee effect are especially vulnerable to extinction as the ...