White Shark (Carcharodon carcharias)
... The (great) white shark (Carcharodon carcharias (Linnaeus, 1758)) is the only living species of this genus. In French it is called ‘grand requin blanc’. It is recognizable in the field by its conspicuously black iris and a sharp contrast between dorsal and ventral colouration changing from dark (gre ...
... The (great) white shark (Carcharodon carcharias (Linnaeus, 1758)) is the only living species of this genus. In French it is called ‘grand requin blanc’. It is recognizable in the field by its conspicuously black iris and a sharp contrast between dorsal and ventral colouration changing from dark (gre ...
Management Plan for the McCown`s Longspur in Canada
... There is no historical data on McCown’s Longspur population abundance but due to the drastic reduction of the breeding range across North America the population has been reported to have declined from the turn of the century, especially from 1905-1930 (Stewart 1975; Sedwick 2004). Similar declines w ...
... There is no historical data on McCown’s Longspur population abundance but due to the drastic reduction of the breeding range across North America the population has been reported to have declined from the turn of the century, especially from 1905-1930 (Stewart 1975; Sedwick 2004). Similar declines w ...
Mechanistic model of cardiac energy metabolism predicts
... are bound together in specific intracellular structures to form a multienzyme complex near the sarcolemma and sarcoplasmic reticulum (8, 19, 42). Because the glycolytic enzymes are not freely distributed, glycolysis can be considered localized in a subdomain within the cytosol. Unfortunately, at pre ...
... are bound together in specific intracellular structures to form a multienzyme complex near the sarcolemma and sarcoplasmic reticulum (8, 19, 42). Because the glycolytic enzymes are not freely distributed, glycolysis can be considered localized in a subdomain within the cytosol. Unfortunately, at pre ...
The Old World monkey DAZ (Deleted in
... A complete copy of the DAZL1 transcription unit was transposed from an autosome to the Y chromosome. This translocation must have occurred after the splitting of the Old World and New World monkeys ∼40 million years ago (13). Within the newly transposed gene a 2.4 kb genomic segment encompassing exo ...
... A complete copy of the DAZL1 transcription unit was transposed from an autosome to the Y chromosome. This translocation must have occurred after the splitting of the Old World and New World monkeys ∼40 million years ago (13). Within the newly transposed gene a 2.4 kb genomic segment encompassing exo ...
Land-use intensification reduces functional redundancy and
... redundancy provides resilience (sometimes called ÔinsuranceÕ) against the loss of functions and services provided by that group if different species show compensatory responses following environmental change (Naeem 1998). This view, however, is only valid if species richness corresponds directly to ...
... redundancy provides resilience (sometimes called ÔinsuranceÕ) against the loss of functions and services provided by that group if different species show compensatory responses following environmental change (Naeem 1998). This view, however, is only valid if species richness corresponds directly to ...
Downloaded
... LNC) were found to strongly covary with site conditions. For such more variable traits over-all species mean values may be less representative, and thus, the use of site-specific mean values for every species has been suggested to take intraspecific trait variability into account (de Bello et al. 20 ...
... LNC) were found to strongly covary with site conditions. For such more variable traits over-all species mean values may be less representative, and thus, the use of site-specific mean values for every species has been suggested to take intraspecific trait variability into account (de Bello et al. 20 ...
Deep-Sea Hydrothermal Vent Communities C
... prevent exchange of organisms between distinct biogeographic provinces and can limit gene flow regionally (Vrijenhoek 2010). When vents were first discovered, ecologists wondered how larvae could disperse far enough and often enough to sustain populations (Lutz et al. 1984). Questions about how vent p ...
... prevent exchange of organisms between distinct biogeographic provinces and can limit gene flow regionally (Vrijenhoek 2010). When vents were first discovered, ecologists wondered how larvae could disperse far enough and often enough to sustain populations (Lutz et al. 1984). Questions about how vent p ...
The seedling as part of a plant`s life history strategy
... might reflect a slower metabolic rate in large-seeded species (Green & Juniper, 2004b). This slower metabolic rate would allow seedlings to persist for longer on a given amount of reserves in times of carbon stress. As is often the case, it is likely that all of these mechanisms contribute to the gre ...
... might reflect a slower metabolic rate in large-seeded species (Green & Juniper, 2004b). This slower metabolic rate would allow seedlings to persist for longer on a given amount of reserves in times of carbon stress. As is often the case, it is likely that all of these mechanisms contribute to the gre ...
Environment, Politics and Development Working Paper Series
... extinction (Diamond, 1989; Grayson et al., 2001; Lyons et al., 2004). Although there is increasing evidence of an elevated rate of extinctions due to human activity (e,g, Lande, 1998; Duffy, 2003; Michalski and Peres, 2005), the naturalness of extinction events is also of relevance for our perspecti ...
... extinction (Diamond, 1989; Grayson et al., 2001; Lyons et al., 2004). Although there is increasing evidence of an elevated rate of extinctions due to human activity (e,g, Lande, 1998; Duffy, 2003; Michalski and Peres, 2005), the naturalness of extinction events is also of relevance for our perspecti ...
Understanding what controls the spatial distribution of fish
... mechanisms such as site fidelity, learning behaviour, life-history changes, competition (intra- and inter specific), predator avoidance, spawning behaviour, and exploitation are expected to affect the spatial ...
... mechanisms such as site fidelity, learning behaviour, life-history changes, competition (intra- and inter specific), predator avoidance, spawning behaviour, and exploitation are expected to affect the spatial ...
Perry J, Fisher A and Palmer C (2011)
... and those where they were absent. In the latter case, we treat all the site 6 quadrats as nominally ‘present’ sites, because we want to examine whether there are features of this site compared with the others that might help explain why Carpentarian Grasswrens were recorded only there. We used non-p ...
... and those where they were absent. In the latter case, we treat all the site 6 quadrats as nominally ‘present’ sites, because we want to examine whether there are features of this site compared with the others that might help explain why Carpentarian Grasswrens were recorded only there. We used non-p ...
7. Annex 2 – Review of Theoretical Community Ecology
... changes in fishing activity in the past if they are to assess reasonable reference levels. They also need to have a clear understanding of the functional relationship between fishing disturbance and variation in their chosen index if they are to advise manager of exactly what is required, in terms o ...
... changes in fishing activity in the past if they are to assess reasonable reference levels. They also need to have a clear understanding of the functional relationship between fishing disturbance and variation in their chosen index if they are to advise manager of exactly what is required, in terms o ...
Assessing the ecological significance of linkage and connectivity for
... As urbanisation continues to fragment and degrade habitats there is a need to ensure that cities are managed to sustain ecosystem function and high biodiversity. Ecological theories suggest that areas with higher levels of functional connectivity sustain a more diverse avian population. By identifyi ...
... As urbanisation continues to fragment and degrade habitats there is a need to ensure that cities are managed to sustain ecosystem function and high biodiversity. Ecological theories suggest that areas with higher levels of functional connectivity sustain a more diverse avian population. By identifyi ...
mesquite seeds, bruchid beetles, and
... inhibited pod production totally in alternate years or limited seed production severely if pods were produced. Along with a lack of synchrony in reproduction, this created a tremendous heterogeneity, in the number and ease of location, of good seeds which could be used by the bruchids. This heteroge ...
... inhibited pod production totally in alternate years or limited seed production severely if pods were produced. Along with a lack of synchrony in reproduction, this created a tremendous heterogeneity, in the number and ease of location, of good seeds which could be used by the bruchids. This heteroge ...
December 2012
... Although firebreaks may be important for oribi survival, there are a few problems that need to be addressed. Firebreaks attract a large number of oribi that feed in close proximity to each other which results in an increased number of aggressive interactions between males. Although I am not directly ...
... Although firebreaks may be important for oribi survival, there are a few problems that need to be addressed. Firebreaks attract a large number of oribi that feed in close proximity to each other which results in an increased number of aggressive interactions between males. Although I am not directly ...
Distribution of zooxanthellate zoanthid species
... Intertidal distributions limited by minimum winter air temperatures As shown in Fig. 1b and Table 1, many zooxanthellate zoanthids can be found up into the intertidal zone at southern locations but are only subtidal at more northern locations. Minimum ocean temperatures, while limiting overall distr ...
... Intertidal distributions limited by minimum winter air temperatures As shown in Fig. 1b and Table 1, many zooxanthellate zoanthids can be found up into the intertidal zone at southern locations but are only subtidal at more northern locations. Minimum ocean temperatures, while limiting overall distr ...
Ecosystems and Environment
... Some human populations have undergone a demographic transition, a shift from high birth and death rates to low birth and death rates. Usually, death rate decreases first, due to medical and public health advances. Later, birth rate also declines. During the period between the fall in death rate and ...
... Some human populations have undergone a demographic transition, a shift from high birth and death rates to low birth and death rates. Usually, death rate decreases first, due to medical and public health advances. Later, birth rate also declines. During the period between the fall in death rate and ...
Functional uniformity - Portsmouth Research Portal
... Stradbroke. Excluding the tail of 'satellite' (Hanski, 1982) or 'excess rare' genera (Magurran ...
... Stradbroke. Excluding the tail of 'satellite' (Hanski, 1982) or 'excess rare' genera (Magurran ...
PP Chapter 21 Text
... Some human populations have undergone a demographic transition, a shift from high birth and death rates to low birth and death rates. Usually, death rate decreases first, due to medical and public health advances. Later, birth rate also declines. During the period between the fall in death rate and ...
... Some human populations have undergone a demographic transition, a shift from high birth and death rates to low birth and death rates. Usually, death rate decreases first, due to medical and public health advances. Later, birth rate also declines. During the period between the fall in death rate and ...
Preston and Johnson 2012 garter snakes
... indicate that native amphibians are probably a prerequisite for the persistence of T. atratus within our study region. The diet composition of Aquatic Gartersnake found at our study sites in California varies from that of several other reports (Table 3). The most comprehensive study of the feeding e ...
... indicate that native amphibians are probably a prerequisite for the persistence of T. atratus within our study region. The diet composition of Aquatic Gartersnake found at our study sites in California varies from that of several other reports (Table 3). The most comprehensive study of the feeding e ...
Long-term ecological dynamics: reciprocal
... because they represent typical ecosystems, but rather because there are few confounding factors that influence ecosystem processes, thus making it easier to infer causal relationships. (c) Disturbance gradients Natural gradients can also be used to study long-term effects of changes in disturbance r ...
... because they represent typical ecosystems, but rather because there are few confounding factors that influence ecosystem processes, thus making it easier to infer causal relationships. (c) Disturbance gradients Natural gradients can also be used to study long-term effects of changes in disturbance r ...
International Single Species Action Plan for the
... Wymenga of Altenburg & Wymenga (The Netherlands). The Action Plan follows the format for Single Species Action Plans approved by the AEWA 2nd Meeting of Parties in September 2002. This AEWA Action Plan builds on the European Commission Management Plan for the Black-tailed Godwit which was adopted by ...
... Wymenga of Altenburg & Wymenga (The Netherlands). The Action Plan follows the format for Single Species Action Plans approved by the AEWA 2nd Meeting of Parties in September 2002. This AEWA Action Plan builds on the European Commission Management Plan for the Black-tailed Godwit which was adopted by ...
keeping options alive - World Resources Report
... since the Cretaceous Era ended some 65 million years ago have losses been so rapid and great. If the trend continues, one quarter of the world's species may be gone by 2050. Desertification, fisheries collapse, tropical deforestationsuch losses already attest amply to how much biological impoverishm ...
... since the Cretaceous Era ended some 65 million years ago have losses been so rapid and great. If the trend continues, one quarter of the world's species may be gone by 2050. Desertification, fisheries collapse, tropical deforestationsuch losses already attest amply to how much biological impoverishm ...
Allelopathic Affects of Briareum asbestinum and Gorgonia sp. on the
... the dispersion patterns of neighboring octocorals. Two possible explanations as to why predicted allelopathic interactions were not detected may involve the low diversity of the Caribbean region in comparison to that of the Indo-Pacific and the limited number of species targeted in this study. In or ...
... the dispersion patterns of neighboring octocorals. Two possible explanations as to why predicted allelopathic interactions were not detected may involve the low diversity of the Caribbean region in comparison to that of the Indo-Pacific and the limited number of species targeted in this study. In or ...