Discovery of the invasive Mayan Cichlid fish “Cichlasoma
... We report on the occurrence and possible establishment of a non-native cichlid fish in a brackish-water system in the lower Chao Phraya River delta region, Thailand. Although, the possibility of some degree of introgressive hybridization can not be ruled out, Thailand specimens agree best with Mayan ...
... We report on the occurrence and possible establishment of a non-native cichlid fish in a brackish-water system in the lower Chao Phraya River delta region, Thailand. Although, the possibility of some degree of introgressive hybridization can not be ruled out, Thailand specimens agree best with Mayan ...
Vertical zonation in the rocky intertidal at Cocos Island (Isla del Coco
... Abstract: This study presents a description of the tropical intertidal shores of Cocos Island (Isla del Coco), Pacific, Costa Rica. The intertidal zones were surveyed photographically with 116 digital images of quadrats (25 x 25 cm), and 130 of the cliffs in five days. The percent of cover and abund ...
... Abstract: This study presents a description of the tropical intertidal shores of Cocos Island (Isla del Coco), Pacific, Costa Rica. The intertidal zones were surveyed photographically with 116 digital images of quadrats (25 x 25 cm), and 130 of the cliffs in five days. The percent of cover and abund ...
Critical Habitat Survey for Threespine Stickleback Species Pairs
... Threespine sticklebacks (Gasterosteus spp.), found across the northern hemisphere, have undergone an amazingly adaptive radiation since the last Ice Age. At this time, marine stickleback, which inhabit near shore coastal waters, became isolated in lakes as the land rose due to isostatic rebound foll ...
... Threespine sticklebacks (Gasterosteus spp.), found across the northern hemisphere, have undergone an amazingly adaptive radiation since the last Ice Age. At this time, marine stickleback, which inhabit near shore coastal waters, became isolated in lakes as the land rose due to isostatic rebound foll ...
Immigration and the Maintenance of Local Species Diversity
... species (I i 1 0 Gi), our deterministic model now suggests that species extinction never occurs because a certain number of individuals arrive continuously from outside the community. Indeed, when the population is very small (Pi ≈ 0), invasion is guaranteed ( f i 1 0). This also ensures that the co ...
... species (I i 1 0 Gi), our deterministic model now suggests that species extinction never occurs because a certain number of individuals arrive continuously from outside the community. Indeed, when the population is very small (Pi ≈ 0), invasion is guaranteed ( f i 1 0). This also ensures that the co ...
Why Alligators Are Important
... reduced by humans in the 1960s and ‘70s by contamination of their natural habitat, by harvesting them for meat and hides, by increasing agricultural and industrial development, and by the perceived threat to the safety of humans. The federal government listed alligators as endangered in 1970, and by ...
... reduced by humans in the 1960s and ‘70s by contamination of their natural habitat, by harvesting them for meat and hides, by increasing agricultural and industrial development, and by the perceived threat to the safety of humans. The federal government listed alligators as endangered in 1970, and by ...
Cadotte2007 Ecology
... Caswell and Cohen 1991, Amarasekare and Possingham 2001). Further, in an examination of native vs. exotic plant responses to disturbances, Allcock and Hik (2003) showed that exotics, which tend to be weedy, increased with disturbance frequency. They also showed that the natives tend to decline with ...
... Caswell and Cohen 1991, Amarasekare and Possingham 2001). Further, in an examination of native vs. exotic plant responses to disturbances, Allcock and Hik (2003) showed that exotics, which tend to be weedy, increased with disturbance frequency. They also showed that the natives tend to decline with ...
6 Biodiversity and Ecosystem Functioning in Grasslands
... by an ecosystem. The effect of removing species on ecosystem function depends on the prevailing environmental conditions. For example, removing drought-resistant species during a wet year will have small effects on ecosystem processes. However, removing them in a dry year may have major ecosystem ef ...
... by an ecosystem. The effect of removing species on ecosystem function depends on the prevailing environmental conditions. For example, removing drought-resistant species during a wet year will have small effects on ecosystem processes. However, removing them in a dry year may have major ecosystem ef ...
Intraguild predation: a widespread interaction related to
... (1978), i.e. Ôa species that feeds on more than one trophic levelÕ. Therefore, we expanded the classification, following the logical assumption that basal species are plants or detritus and intermediate species are animals. We considered that species eating only basal organisms were either herbivore ...
... (1978), i.e. Ôa species that feeds on more than one trophic levelÕ. Therefore, we expanded the classification, following the logical assumption that basal species are plants or detritus and intermediate species are animals. We considered that species eating only basal organisms were either herbivore ...
Effects of alien species on plant-pollinator interactions: how can
... as large, showy flowers, offer high rewards for their visitors, and/or employ a supergeneralist pollination strategy (Morales and Traveset 2009). The attraction of pollinators to these invasive plants can have major effects on native plant species in the invaded community (Bjerknes et al. 2007; Mora ...
... as large, showy flowers, offer high rewards for their visitors, and/or employ a supergeneralist pollination strategy (Morales and Traveset 2009). The attraction of pollinators to these invasive plants can have major effects on native plant species in the invaded community (Bjerknes et al. 2007; Mora ...
Leaf-level nitrogen-use efficiency of canopy and understorey
... 3. NUEL was analysed further as the product of two components: leaf-level N productivity (NPL) and mean residence time of leaf N (MRTL). The canopy species had significantly larger NPL and significantly shorter MRTL than the understorey species. 4. As the photosynthetic capacity was similar among th ...
... 3. NUEL was analysed further as the product of two components: leaf-level N productivity (NPL) and mean residence time of leaf N (MRTL). The canopy species had significantly larger NPL and significantly shorter MRTL than the understorey species. 4. As the photosynthetic capacity was similar among th ...
Resource Partitioning among Five Agrobiont Spiders of a Rice
... niches also change with the growth of crops. This environmental variability may also reduce niche overlap between coexisting species. The present study deals with 5 species of spiders that are very abundant in rice ecosystems of Punjab, Pakistan (Tahir and Butt 2008). All of these species utilize th ...
... niches also change with the growth of crops. This environmental variability may also reduce niche overlap between coexisting species. The present study deals with 5 species of spiders that are very abundant in rice ecosystems of Punjab, Pakistan (Tahir and Butt 2008). All of these species utilize th ...
Revista Nordestina de Zoologia Revisado 1 edicao
... The fauna that inhabits artificial reef environments such as shipwrecks is part of a biological community that cannot be neglected. This study aimed to uncover the benthic animal biodiversity of the Servemar X and Vapor de Baixo shipwrecks, located on the coast of Pernambuco State, Brazil, to reveal ...
... The fauna that inhabits artificial reef environments such as shipwrecks is part of a biological community that cannot be neglected. This study aimed to uncover the benthic animal biodiversity of the Servemar X and Vapor de Baixo shipwrecks, located on the coast of Pernambuco State, Brazil, to reveal ...
Volume 13 - Utah Lepidopterists` Society!
... particularly precipitation patterns, seem to have a large impact on butterfly numbers in Big Springs Hollow. Individual Species Results and Flight Periods In April of 2001, the migratory species Vanessa cardui (Painted Lady), entered Utah Valley in large numbers. Their index of abundance for Big Spr ...
... particularly precipitation patterns, seem to have a large impact on butterfly numbers in Big Springs Hollow. Individual Species Results and Flight Periods In April of 2001, the migratory species Vanessa cardui (Painted Lady), entered Utah Valley in large numbers. Their index of abundance for Big Spr ...
Standard 7: Select terrestrial, freshwater and marine conservation
... At Risk Species which are not included in the above category. Many species are listed as species of special concern, sensitive, species of community interest, or extinction prone. Many countries have published analyses of conservation priorities for various taxonomic groups. ...
... At Risk Species which are not included in the above category. Many species are listed as species of special concern, sensitive, species of community interest, or extinction prone. Many countries have published analyses of conservation priorities for various taxonomic groups. ...
Severity of the Effects of Invasive Rats on Seabirds: A Global Review
... interactions and used meta-analytic techniques to determine which characteristics make particular seabird species more or less vulnerable to invasive rat predation. Given limited conservation dollars and the introduction of rats to thousands of islands, prioritization of islands for rat eradication ...
... interactions and used meta-analytic techniques to determine which characteristics make particular seabird species more or less vulnerable to invasive rat predation. Given limited conservation dollars and the introduction of rats to thousands of islands, prioritization of islands for rat eradication ...
PARRAMATTA RIVER CATCHMENT NATIVE HABITATS AND FAUNA
... All intellectual property rights, including copyright, in designs developed and documents created by APPLIED ECOLOGY Pty Limited remain the property of that company. Any use made of any such design or document without the prior written approval APPLIED ECOLOGY Pty Limited will constitute an infringe ...
... All intellectual property rights, including copyright, in designs developed and documents created by APPLIED ECOLOGY Pty Limited remain the property of that company. Any use made of any such design or document without the prior written approval APPLIED ECOLOGY Pty Limited will constitute an infringe ...
Mutualism, Facilitation, and the Structure of Ecological Communities
... One of the classic mechanisms through which populations are thought to be regulated is density-dependent mortality. High intraspecific densities can be associated with high rates of mortality because of competition for limiting resources—such as food, light, or space—or increased rates of detection ...
... One of the classic mechanisms through which populations are thought to be regulated is density-dependent mortality. High intraspecific densities can be associated with high rates of mortality because of competition for limiting resources—such as food, light, or space—or increased rates of detection ...
Comparative evolution of flower and fruit morphology
... mimicry, in which morphologies of different species converge in order to attract a shared set of high-quality dispersers, could be prevalent among fruits (Burns 2005). Finally, traits encouraging a restricted set of seed dispersal agents (or disperser constancy) might actually be selected against, i ...
... mimicry, in which morphologies of different species converge in order to attract a shared set of high-quality dispersers, could be prevalent among fruits (Burns 2005). Finally, traits encouraging a restricted set of seed dispersal agents (or disperser constancy) might actually be selected against, i ...
Comparative evolution of flower and fruit morphology
... et al. 2007). Sharing seed dispersers should not lead to unfit hybrids nor engender costs analogous to either CPL or HPD, suggesting that natural selection would not drive a similar amount of diversification in fruit traits across species. Furthermore, a type of Müllerian mimicry, in which morpholo ...
... et al. 2007). Sharing seed dispersers should not lead to unfit hybrids nor engender costs analogous to either CPL or HPD, suggesting that natural selection would not drive a similar amount of diversification in fruit traits across species. Furthermore, a type of Müllerian mimicry, in which morpholo ...
1999 USA -3F Interd 3
... functional diversity. So we must determine exactly what aspects of biodiversity to seek, and why. A battery of suggestions about how to achieve this re-focus on biodiversity (e.g., ecosystem management and the `new forestry') are catchwords rather than guides on how to manage forests on the ground. ...
... functional diversity. So we must determine exactly what aspects of biodiversity to seek, and why. A battery of suggestions about how to achieve this re-focus on biodiversity (e.g., ecosystem management and the `new forestry') are catchwords rather than guides on how to manage forests on the ground. ...
Power, M.E., D. Tilman, J.A. Estes, B.A. Menge, W.J. Bond, L.S. Mills
... effects, and keystones would be rare. ( b ) In some communities, the CI distribu- did not resolve prey to species, and tion may have several modes. with kev- Rafaelli and Hall (1992) could mastone species falling into modes that are nipulate predators such as shorebirds sufficiently far from zero. o ...
... effects, and keystones would be rare. ( b ) In some communities, the CI distribu- did not resolve prey to species, and tion may have several modes. with kev- Rafaelli and Hall (1992) could mastone species falling into modes that are nipulate predators such as shorebirds sufficiently far from zero. o ...
Fighting over food unites the birds of North America in a
... bioRxiv preprint first posted online Jan. 30, 2017; doi: http://dx.doi.org/10.1101/104133. The copyright holder for this preprint (which was not peer-reviewed) is the author/funder. It is made available under a CC-BY 4.0 International license. ...
... bioRxiv preprint first posted online Jan. 30, 2017; doi: http://dx.doi.org/10.1101/104133. The copyright holder for this preprint (which was not peer-reviewed) is the author/funder. It is made available under a CC-BY 4.0 International license. ...
Read full study - Center for Watershed Sciences
... 10,000 and 20,000 freshwater species are thought to be extinct or imperiled by human activities [1, 3], with freshwater species at higher risk of extinction than their terrestrial counterparts [4]. In North America, extinction rates for freshwater species are four to five times greater than those fo ...
... 10,000 and 20,000 freshwater species are thought to be extinct or imperiled by human activities [1, 3], with freshwater species at higher risk of extinction than their terrestrial counterparts [4]. In North America, extinction rates for freshwater species are four to five times greater than those fo ...
Manual
... earth is our house and the house for all living organisms on the planet. The environments which make up our house have two parts, the abiotic and biotic. The biotic portion of the environment is the living portion and includes all of the organisms present. The abiotic portion is the non-living facto ...
... earth is our house and the house for all living organisms on the planet. The environments which make up our house have two parts, the abiotic and biotic. The biotic portion of the environment is the living portion and includes all of the organisms present. The abiotic portion is the non-living facto ...
Island restoration
The ecological restoration of islands, or island restoration, is the application of the principles of ecological restoration to islands and island groups. Islands, due to their isolation, are home to many of the world's endemic species, as well as important breeding grounds for seabirds and some marine mammals. Their ecosystems are also very vulnerable to human disturbance and particularly to introduced species, due to their small size. Island groups such as New Zealand and Hawaii have undergone substantial extinctions and losses of habitat. Since the 1950s several organisations and government agencies around the world have worked to restore islands to their original states; New Zealand has used them to hold natural populations of species that would otherwise be unable to survive in the wild. The principal components of island restoration are the removal of introduced species and the reintroduction of native species.