The Species Problem - OpenSIUC
... a number of Mendelian populations living on several widely separated oceanic islands may all belong to one species, even though there is virtually no chance of interbreeding in nature because of the distances separating the islands. On the other hand, if it were found, when they still did not inter ...
... a number of Mendelian populations living on several widely separated oceanic islands may all belong to one species, even though there is virtually no chance of interbreeding in nature because of the distances separating the islands. On the other hand, if it were found, when they still did not inter ...
Invasion success of vertebrates in Europe and North America
... they breed in Europe or North America. Fish species were included if they spend all or much of their lives in fresh water. This category includes diadromous species but not casual visitors to fresh waters. We then excluded those species that are native to both continents and gathered information on ...
... they breed in Europe or North America. Fish species were included if they spend all or much of their lives in fresh water. This category includes diadromous species but not casual visitors to fresh waters. We then excluded those species that are native to both continents and gathered information on ...
Monitoring - NSW Minerals Council
... honeyeaters, increasing over time with structural diversity • Low invert diversity compared with LSF • Abundance data for inverts higher than LSF due to high numbers of ants recorded • Invert diversity and relative abundance of ants requires further analysis and review to determine potential impacts ...
... honeyeaters, increasing over time with structural diversity • Low invert diversity compared with LSF • Abundance data for inverts higher than LSF due to high numbers of ants recorded • Invert diversity and relative abundance of ants requires further analysis and review to determine potential impacts ...
effect cause a famous actor`s movies are no longer popular a
... From the tundra to the tropics, frogs have thrived for nearly 200 million years. Now they are vanishing - rapidly and perhaps irretrievably. According to Mike Lannoo of the Declining Amphibian Populations Task Force, “If something out there is affecting frogs, there’s a chance it’s affecting us too. ...
... From the tundra to the tropics, frogs have thrived for nearly 200 million years. Now they are vanishing - rapidly and perhaps irretrievably. According to Mike Lannoo of the Declining Amphibian Populations Task Force, “If something out there is affecting frogs, there’s a chance it’s affecting us too. ...
Accipitridae): New distribution record from southwest Madagascar
... not known to use open habitats of anthropogenic origin (René de Roland 2013a). Its diet is composed primarily of medium to large birds and mammals (René de Roland 2001, Karpanty 2006). It is regarded as rare throughout its range and occurs at very low densities even in optimal habitat (René de Rolan ...
... not known to use open habitats of anthropogenic origin (René de Roland 2013a). Its diet is composed primarily of medium to large birds and mammals (René de Roland 2001, Karpanty 2006). It is regarded as rare throughout its range and occurs at very low densities even in optimal habitat (René de Rolan ...
Breeding Distributions of North American Bird Species Moving North
... Columbiformes, Cuculiformes, Caprimulgiformes, and Piciformes. Birds in these groups make up the majority of species detected on BBS routes. Other potential candidate species, such as game birds, were excluded because their distributions have been influenced by documented human introductions and rel ...
... Columbiformes, Cuculiformes, Caprimulgiformes, and Piciformes. Birds in these groups make up the majority of species detected on BBS routes. Other potential candidate species, such as game birds, were excluded because their distributions have been influenced by documented human introductions and rel ...
azores (macaronesia) - Portal do Governo dos Açores
... territory oriented to the conservation of biodiversity and the sustainable use of natural resources. Designation of 3 Biosphere Reserves: Three islands (Corvo, Graciosa and Flores) have been proposed by the Azores Government and approved by UNESCO as Biosphere Reserves, with the purpose of promoting ...
... territory oriented to the conservation of biodiversity and the sustainable use of natural resources. Designation of 3 Biosphere Reserves: Three islands (Corvo, Graciosa and Flores) have been proposed by the Azores Government and approved by UNESCO as Biosphere Reserves, with the purpose of promoting ...
Woody Species Regeneration in Atlantic Forest
... However, it is difficult, if not impossible, to manipulate a large set of species and functional groups to actively assemble a complex ecosystem without counting on spontaneous species arrival from neighboring sources (Parrotta et al. 1997). Although it is possible to introduce a relatively large nu ...
... However, it is difficult, if not impossible, to manipulate a large set of species and functional groups to actively assemble a complex ecosystem without counting on spontaneous species arrival from neighboring sources (Parrotta et al. 1997). Although it is possible to introduce a relatively large nu ...
Early development of the subtidal marine
... way, either by preventing other organisms from getting established (i.e. inhibition) or by creating the right circumstances for other species to join in (i.e. facilitation) (Connell and Slatyer, 1977). Consequently, the number of individuals of each species in the assemblage will change, and gradual ...
... way, either by preventing other organisms from getting established (i.e. inhibition) or by creating the right circumstances for other species to join in (i.e. facilitation) (Connell and Slatyer, 1977). Consequently, the number of individuals of each species in the assemblage will change, and gradual ...
One world, many pathogens
... Europe by Santini et al. as well as similar analyses of forest insect and disease invasions in other parts of the world (Roques et al., 2009; Aukema et al., 2010; Marini et al., 2012) provide useful characterization of invasion pathways. This information is critical for informing policies on trade a ...
... Europe by Santini et al. as well as similar analyses of forest insect and disease invasions in other parts of the world (Roques et al., 2009; Aukema et al., 2010; Marini et al., 2012) provide useful characterization of invasion pathways. This information is critical for informing policies on trade a ...
Latitudinal Gradients in Species Diversity PDF file
... allows species to have larger ranges, and consequently larger population sizes. Thus, species with larger ranges are likely to have lower extinction rates (Rosenzweig 2003). Additionally, species with larger ranges may be more likely to undergo allopatric speciation, which would increase rates of sp ...
... allows species to have larger ranges, and consequently larger population sizes. Thus, species with larger ranges are likely to have lower extinction rates (Rosenzweig 2003). Additionally, species with larger ranges may be more likely to undergo allopatric speciation, which would increase rates of sp ...
CBD Strategy and Action Plan - Mongolia (Part II, English version)
... saline and the latter lie at relatively high altitude. All these lakes depend on precipitation in the Altai and Khangai mountains for their existence; and as they shrink in summer and have considerable inflow in spring, they show a wide diversity of wetland habitats, ranging from salt marshes and s ...
... saline and the latter lie at relatively high altitude. All these lakes depend on precipitation in the Altai and Khangai mountains for their existence; and as they shrink in summer and have considerable inflow in spring, they show a wide diversity of wetland habitats, ranging from salt marshes and s ...
Using surrogate (or substitute) pest (or insect or species) in the
... species tend to be based on species’ attributes and there is often variation in scope, type and quality of information available. For example, predictions on a cryptic species, environmental or economic impact are often reliant on expert opinion rather than on specific data. Expert opinion is of sub ...
... species tend to be based on species’ attributes and there is often variation in scope, type and quality of information available. For example, predictions on a cryptic species, environmental or economic impact are often reliant on expert opinion rather than on specific data. Expert opinion is of sub ...
Clonal selection prevents tragedy of the commons when neighbors
... they invade one another. In the case when all species have similar mutation rates, we observe a perpetual arms race where no single species prevails. When only two species mutate, their aggressions increase indefinitely until the ecosystem collapses and only the nonmutating species survives. Finally ...
... they invade one another. In the case when all species have similar mutation rates, we observe a perpetual arms race where no single species prevails. When only two species mutate, their aggressions increase indefinitely until the ecosystem collapses and only the nonmutating species survives. Finally ...
Population Index of Common Breeding Birds in Italian Mountain
... & Tellini Florenzano G. 2013. Farmland Bird Index in Italy: different trends within macroecological regions can hide critical situations for farmland species. Book of abstracts of the 19th Conference of the European Bird Census Council, Cluj, pp. 21. ...
... & Tellini Florenzano G. 2013. Farmland Bird Index in Italy: different trends within macroecological regions can hide critical situations for farmland species. Book of abstracts of the 19th Conference of the European Bird Census Council, Cluj, pp. 21. ...
Preliminary Program
... Theme: Management systems for dry natural forest ecosystems (including Savanna forests, bush encroachment and sustainable livelihoods issues). Keynote 1; Perspectives from Kruger National Park on managing a heterogeneous tree/grass system Occurrence, abundance and growth of the dryland forest specie ...
... Theme: Management systems for dry natural forest ecosystems (including Savanna forests, bush encroachment and sustainable livelihoods issues). Keynote 1; Perspectives from Kruger National Park on managing a heterogeneous tree/grass system Occurrence, abundance and growth of the dryland forest specie ...
Floristic Study of the Serpentine Sites in the Eastern Alps
... facultative limestone sensitives and the indifferent (bodenvag) species groups (SELVI, 2006). Serpentine syndrome was described in tropical and mediterranean areas. Our research has aimed at studying wheather the existence of the syndrome can be floristically proven ont he suboceanic-continental are ...
... facultative limestone sensitives and the indifferent (bodenvag) species groups (SELVI, 2006). Serpentine syndrome was described in tropical and mediterranean areas. Our research has aimed at studying wheather the existence of the syndrome can be floristically proven ont he suboceanic-continental are ...
Beta diversity - Green Resistance
... Structural complexity and diversity have always gone together for bird-watchers and naturalists the MacArthurs quantified this observation by relating bird diversity to foliage height diversity in the 1960s Plotted diversity of birds observed in different habitats according to diversity in folia ...
... Structural complexity and diversity have always gone together for bird-watchers and naturalists the MacArthurs quantified this observation by relating bird diversity to foliage height diversity in the 1960s Plotted diversity of birds observed in different habitats according to diversity in folia ...
Vegetation Biodiversity using Remote Sensing
... vegetation map to remotely estimate plant richness Detailed floristic data for each study site enabled weighting the land cover types based on relative vascular richness within a type The weighting factors were determined by dividing the sum of potentially occurring species of a cover type by th ...
... vegetation map to remotely estimate plant richness Detailed floristic data for each study site enabled weighting the land cover types based on relative vascular richness within a type The weighting factors were determined by dividing the sum of potentially occurring species of a cover type by th ...
Pattern in the Local Diversity of Coral Reef Fishes Versus Rates of
... in mid-water and away from patches (to minimize effects on behavior and movement of fishes) but while close enough to identify species. All species observed were counted, the most abundant first. No effort was made to census cryptic fish species (e.g., blennies, gobies) as this would disrupt foragin ...
... in mid-water and away from patches (to minimize effects on behavior and movement of fishes) but while close enough to identify species. All species observed were counted, the most abundant first. No effort was made to census cryptic fish species (e.g., blennies, gobies) as this would disrupt foragin ...
62 The Cuban Treefrog in Florida: Life History of a Successful
... The main weakness of the book is the organization and writing style. The text generally reads like a dissertation rather than a book, not too surprising given that the information is based on a dissertation (Meshaka 1994). The introductory and concluding chapters are very cursory and the text is pro ...
... The main weakness of the book is the organization and writing style. The text generally reads like a dissertation rather than a book, not too surprising given that the information is based on a dissertation (Meshaka 1994). The introductory and concluding chapters are very cursory and the text is pro ...
Investigating various butterfly species abundance and distribution in
... There are around three times as many describes species of insects than there are of all other animals combined (Sabrosky, 1953). This is staggering as their roles within the ecosystem are often overlooked in comparison to the megafauna. Their size however is in no way equal to the importance their r ...
... There are around three times as many describes species of insects than there are of all other animals combined (Sabrosky, 1953). This is staggering as their roles within the ecosystem are often overlooked in comparison to the megafauna. Their size however is in no way equal to the importance their r ...
The Success of Snails
... Department of Agriculture and Consumer Services. The snails tolerance for Florida’s winter period has enabled this remarkable species not only to survive but to spread. GALS as they are known which covers a range of giant African land snail families cannot be imported to America because of the great ...
... Department of Agriculture and Consumer Services. The snails tolerance for Florida’s winter period has enabled this remarkable species not only to survive but to spread. GALS as they are known which covers a range of giant African land snail families cannot be imported to America because of the great ...
3. hotspot casestudy info
... hard-leafed, evergreen, and fire-prone shrubs that thrives on the region's rocky or sandy nutrient-poor soils. Although the region was once covered by lush rain forest, climate changes around 15 million years ago resulted in the retreat of the forests. Trees were replaced by flammable sclerophyllous ...
... hard-leafed, evergreen, and fire-prone shrubs that thrives on the region's rocky or sandy nutrient-poor soils. Although the region was once covered by lush rain forest, climate changes around 15 million years ago resulted in the retreat of the forests. Trees were replaced by flammable sclerophyllous ...
Temporal and Spatial Variation in Species Diversity of Wandering
... why some communities have more species than others. Increased species diversity in tropical areas and climax communities has been attributed to climatic stability, long evolutionary history, high productivity, and spatial heterogeneity. Since factors affecting the structure of communities are varied ...
... why some communities have more species than others. Increased species diversity in tropical areas and climax communities has been attributed to climatic stability, long evolutionary history, high productivity, and spatial heterogeneity. Since factors affecting the structure of communities are varied ...
Fauna of Africa
Fauna of Africa, in its broader sense, is all the animals living in Africa and its surrounding seas and islands. The more characteristic African fauna is found in the Afrotropical ecoregion. Lying almost entirely within the tropics, and equally to north and south of the equator creates favourable conditions for rich wildlife.