diel and seasonal variation in species composition and abundance
... composition, the two Processa species were noticeably absent from day samples. The hippolytid Lysmata moorei and the palaemonid Brachycarpus biunguiculatus were seldom found (Table 1) but, when collected, occurred only in night samples. Night mean abundances of carideans were significantly higher th ...
... composition, the two Processa species were noticeably absent from day samples. The hippolytid Lysmata moorei and the palaemonid Brachycarpus biunguiculatus were seldom found (Table 1) but, when collected, occurred only in night samples. Night mean abundances of carideans were significantly higher th ...
Determination of Primary Placeholder Habitat Associations in a Kelp
... disperse long distances (Altieri 2003). The larvae crawl along the substrate and usually do not disperse more than 1.3 meters away from the parent individual (Altieri 2003). From an ecological standpoint, this suggests that if one individual is able to colonize a rock, soon many individuals will col ...
... disperse long distances (Altieri 2003). The larvae crawl along the substrate and usually do not disperse more than 1.3 meters away from the parent individual (Altieri 2003). From an ecological standpoint, this suggests that if one individual is able to colonize a rock, soon many individuals will col ...
The community context of species` borders: ecological and
... such episodes of local adaptation from eventually allowing the populations to march across the mountain? One explanation is that there may not be sufficient genetic variation in the population for natural selection, given the intensity of selection. As shown by Holt and Gomulkiewicz (1997), adaptati ...
... such episodes of local adaptation from eventually allowing the populations to march across the mountain? One explanation is that there may not be sufficient genetic variation in the population for natural selection, given the intensity of selection. As shown by Holt and Gomulkiewicz (1997), adaptati ...
Relationships Among Living Things A. Organizing Ecosystems
... then the frog population might not have enough food. This would limit the size of the frog population. ...
... then the frog population might not have enough food. This would limit the size of the frog population. ...
Gillman and Wright 2006 - Reed F. Noss Lab at the University of
... 2005). It is also not known if the variety of relationships observed at different scales can be attributed to a single mechanism or whether several mechanisms interact in different ways at different scales. Competitive exclusion theory predicts a unimodal relationship on the basis that at low produc ...
... 2005). It is also not known if the variety of relationships observed at different scales can be attributed to a single mechanism or whether several mechanisms interact in different ways at different scales. Competitive exclusion theory predicts a unimodal relationship on the basis that at low produc ...
Biodiversity and ecosystem functioning: reconciling the
... experimentally-controlled diversity gradient (by removing species from plots – cf. Symstad & Tilman 2001 – or by synthesizing communities of differing diversity from the Bibury species pool). Indeed the herbicide application experiments that existed at Bibury prior to 1990 could serve as a removal e ...
... experimentally-controlled diversity gradient (by removing species from plots – cf. Symstad & Tilman 2001 – or by synthesizing communities of differing diversity from the Bibury species pool). Indeed the herbicide application experiments that existed at Bibury prior to 1990 could serve as a removal e ...
Fig. 3 - ePrints Soton - University of Southampton
... environmental forcing that is not always realised. Changes in species evenness and the rank order of dominant species are more widespread responses to directional forcing. However, despite the repercussions for ecosystem functioning such changes have received little attention. Here, we experimentall ...
... environmental forcing that is not always realised. Changes in species evenness and the rank order of dominant species are more widespread responses to directional forcing. However, despite the repercussions for ecosystem functioning such changes have received little attention. Here, we experimentall ...
Marine Invertebrate Conservation: Evaluation of Fisheries Over
... Garcia (1983) suggested evidence of SRRs relative yield available in other concentrais largely the result of artifacts owing to the tions. Nevertheless, this pattern of exploirelatively short life spans of studied species tation means that catch per unit effort and the auto-correlation in environmen ...
... Garcia (1983) suggested evidence of SRRs relative yield available in other concentrais largely the result of artifacts owing to the tions. Nevertheless, this pattern of exploirelatively short life spans of studied species tation means that catch per unit effort and the auto-correlation in environmen ...
Increased Floral Divergence in Sympatric Monkeyflowers
... records and supplemented with monographic treatments (Grant 1924; Thompson 1993, 2005). Range areas were calculated from the area inside the polygon(s) that contained all records for a species using ArcGIS 9.2. For tests requiring a discrete classification of range overlap, each species pair was cla ...
... records and supplemented with monographic treatments (Grant 1924; Thompson 1993, 2005). Range areas were calculated from the area inside the polygon(s) that contained all records for a species using ArcGIS 9.2. For tests requiring a discrete classification of range overlap, each species pair was cla ...
EPBC Act Protected Matters Report
... Importance, Commonwealth and State/Territory reserves, listed threatened, migratory and marine species and listed threatened ecological communities. Mapping of Commonwealth land is not complete at this stage. Maps have been collated from a range of sources at various resolutions. Not all species lis ...
... Importance, Commonwealth and State/Territory reserves, listed threatened, migratory and marine species and listed threatened ecological communities. Mapping of Commonwealth land is not complete at this stage. Maps have been collated from a range of sources at various resolutions. Not all species lis ...
Western Brook Lamprey
... After hatching ammocoetes bury in soft substrate until metamorphosis. As with other lamprey species, Western Brook Lamprey (including the Morrison Creek population) only spawn once then die. Threats ...
... After hatching ammocoetes bury in soft substrate until metamorphosis. As with other lamprey species, Western Brook Lamprey (including the Morrison Creek population) only spawn once then die. Threats ...
McPeek, M. A. 1996. Tradeoffs, food web structure
... more strongly regulated by different interactions (Levin 1970; Holt 1977; Tilman 1982, 1987). For example, when the trade-off within a community involves acquiring resources versus avoiding predators, coexistence is often accomplished by some species being better at acquiring resources and other spe ...
... more strongly regulated by different interactions (Levin 1970; Holt 1977; Tilman 1982, 1987). For example, when the trade-off within a community involves acquiring resources versus avoiding predators, coexistence is often accomplished by some species being better at acquiring resources and other spe ...
High Conservation Value Forest Assessment in the Alberta
... old forest condition. The crux of this objective is the description of the ‘long-term mean’. There are several challenges. The use of the mean, rather than a median or interquartile range is probably inappropriate in a variable system which does not follow a normal statistical distribution. The ‘mea ...
... old forest condition. The crux of this objective is the description of the ‘long-term mean’. There are several challenges. The use of the mean, rather than a median or interquartile range is probably inappropriate in a variable system which does not follow a normal statistical distribution. The ‘mea ...
Character Displacement and Fish Behavior, Especially in Coral Reef
... without the need to resort to gill raker counts. In this case geographic isolation in Pleistocene glacial refugia and separate redistribution are invoked to account for the present sympatric occurrences, although the possibility of introgression is advanced to account for the low-raker deep water fo ...
... without the need to resort to gill raker counts. In this case geographic isolation in Pleistocene glacial refugia and separate redistribution are invoked to account for the present sympatric occurrences, although the possibility of introgression is advanced to account for the low-raker deep water fo ...
The efficiency of two widely used commercial live
... 2.2. Small mammal sampling Sampling was performed in 2008 to fall 2010 on eight plots during six trapping sessions of three days each (two sessions per year, July and October), collectively lasting 18 days. Every plot was sampled by a 6 × 6 trapping grid, consisting of 18 Sherman traps (Sherman fold ...
... 2.2. Small mammal sampling Sampling was performed in 2008 to fall 2010 on eight plots during six trapping sessions of three days each (two sessions per year, July and October), collectively lasting 18 days. Every plot was sampled by a 6 × 6 trapping grid, consisting of 18 Sherman traps (Sherman fold ...
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... ant species. As mentioned above, tramp ants tend to have low intraspecific aggression (leading to large colonies with multiple queens) which can then lead to overlapping nests or supercolonies (Passera 1994, Hölldobler & Wilson 1977), thus making it difficult to differentiate distinct colonies in th ...
... ant species. As mentioned above, tramp ants tend to have low intraspecific aggression (leading to large colonies with multiple queens) which can then lead to overlapping nests or supercolonies (Passera 1994, Hölldobler & Wilson 1977), thus making it difficult to differentiate distinct colonies in th ...
Resource partitioning
... Mediterranean Sea, we cannot rely on physiological constraints as a mechanism to exclude potential invaders. With multiple introductions, some individuals with slightly different physiology could survive and reproduce in an environment once thought uninhabitable by their species. ...
... Mediterranean Sea, we cannot rely on physiological constraints as a mechanism to exclude potential invaders. With multiple introductions, some individuals with slightly different physiology could survive and reproduce in an environment once thought uninhabitable by their species. ...
Comparing small mammal faunas based on barn owl (Tyto alba
... results showed that land cover was less heterogeneous at successful sites and unsuccessful nesting sites had significantly more improved grassland, suburban land and wetlands than successful sites. Owl pellet analysis, being an indirect method is acceptable from a conservation aspect and is a relati ...
... results showed that land cover was less heterogeneous at successful sites and unsuccessful nesting sites had significantly more improved grassland, suburban land and wetlands than successful sites. Owl pellet analysis, being an indirect method is acceptable from a conservation aspect and is a relati ...
A mechanistic verification of the competitive exclusion principle
... necessarily suggested that “one of species has any advantage over the other”4, i.e. one and the same species always keeps a definite uncompensated benefit. Fundamentally important point is that empirical studies cannot prove and hardly falsify the competitive exclusion principle – it can be verifie ...
... necessarily suggested that “one of species has any advantage over the other”4, i.e. one and the same species always keeps a definite uncompensated benefit. Fundamentally important point is that empirical studies cannot prove and hardly falsify the competitive exclusion principle – it can be verifie ...
Evolutionary food web model based on body masses gives realistic
... for the fact that the competition matrix is not symmetric. More specialised species exert a higher competition pressure than species with broad feeding ranges. The overlap Iil is similar to the niche overlap discussed by May [36]. We assume that interference competition is significantly higher withi ...
... for the fact that the competition matrix is not symmetric. More specialised species exert a higher competition pressure than species with broad feeding ranges. The overlap Iil is similar to the niche overlap discussed by May [36]. We assume that interference competition is significantly higher withi ...
non-breeding season considerations for the conservation of
... traits of an area being managed such as size, shape, regional habitat distribution, and distance from population sources put strong constraints on how much success a wildlife manager might expect for a specific area. Successful management of many migratory bird populations may require an understandi ...
... traits of an area being managed such as size, shape, regional habitat distribution, and distance from population sources put strong constraints on how much success a wildlife manager might expect for a specific area. Successful management of many migratory bird populations may require an understandi ...
Conference Programme
... behaviour. To achieve this artificial foraging station were used as means of quantifying perceived predation risk within different habitat types. From these stations „Giving-up-Densities‟ (amount of food left once a forager has finished utilising a patch) were collected and compared. Sable as a foca ...
... behaviour. To achieve this artificial foraging station were used as means of quantifying perceived predation risk within different habitat types. From these stations „Giving-up-Densities‟ (amount of food left once a forager has finished utilising a patch) were collected and compared. Sable as a foca ...
Pacific Tailed Frog
... populations are typically found on the windward side of the Cascades and Coast Mountains, though a few scattered occurrences have been observed in leeward systems as far north of latitude 54° N. Coast Region populations are known to range from the Tulameen, Similkameen, Nicola, Coquihalla, Coldwater ...
... populations are typically found on the windward side of the Cascades and Coast Mountains, though a few scattered occurrences have been observed in leeward systems as far north of latitude 54° N. Coast Region populations are known to range from the Tulameen, Similkameen, Nicola, Coquihalla, Coldwater ...