Palms at Inotawa
... bank are exhausted, invasive species take hold and soil nutrients are depleted. They then move onto a new patch of virgin forest. In western Amazonia, peasants from the Andean plateau are moving into the forest with no previous experience of forest agriculture, after growing a few crops they sell-o ...
... bank are exhausted, invasive species take hold and soil nutrients are depleted. They then move onto a new patch of virgin forest. In western Amazonia, peasants from the Andean plateau are moving into the forest with no previous experience of forest agriculture, after growing a few crops they sell-o ...
Adapt or disperse: understanding species persistence in a changing
... systems, however, remains unresolved. Estimates of global warming and precipitation levels at best vary greatly; the response of biological communities to one of the biggest human-induced experiments in evolution is even more uncertain. Estimates of species loss due to climate warming range from 3% ...
... systems, however, remains unresolved. Estimates of global warming and precipitation levels at best vary greatly; the response of biological communities to one of the biggest human-induced experiments in evolution is even more uncertain. Estimates of species loss due to climate warming range from 3% ...
Determinants of Distribu_on
... Glanville fri/llary on the Åland Islands became more synchronous over /me, possibly due to increasing frequency of extreme weather events: ...
... Glanville fri/llary on the Åland Islands became more synchronous over /me, possibly due to increasing frequency of extreme weather events: ...
Global patterns of stream detritivore distribution: implications
... Main conclusions Our results indicate that global patterns of shredder diversity are complex and depend on spatial scale. However, we can draw several conclusions that have important ecological implications. Alpha diversity is limited at tropical sites by local factors, implying a higher risk of los ...
... Main conclusions Our results indicate that global patterns of shredder diversity are complex and depend on spatial scale. However, we can draw several conclusions that have important ecological implications. Alpha diversity is limited at tropical sites by local factors, implying a higher risk of los ...
Habitat Loss, Trophic Collapse, and the Decline of Ecosystem
... stages of collapse, on ants has essentially ...
... stages of collapse, on ants has essentially ...
The_Conversation_15_October_2015
... never regenerate. This potential impact should raise significant alarm, but to date, the Monaro dieback has received relatively little attention or action. What is also particularly concerning is the speed at which this dieback occurred, leaving other species little chance to adapt. There is no evi ...
... never regenerate. This potential impact should raise significant alarm, but to date, the Monaro dieback has received relatively little attention or action. What is also particularly concerning is the speed at which this dieback occurred, leaving other species little chance to adapt. There is no evi ...
LOCAL AND REGIONAL PATTERNS OF SPECIES RICHNESS IN
... These patterns suggest that for those types of Central European vegetation that developed independently of human influence in the Pleistocene or early Holocene (dry grasslands, deciduous forests), there are larger pools of calcicole than calcifuge species. This pattern is also found at the level of ...
... These patterns suggest that for those types of Central European vegetation that developed independently of human influence in the Pleistocene or early Holocene (dry grasslands, deciduous forests), there are larger pools of calcicole than calcifuge species. This pattern is also found at the level of ...
Vanni et al 2009 - units.miamioh.edu
... become magnified over time by size-dependent competitive superiority. An individual that gains an initial advantage (e.g., by arriving early or by having a slightly larger initial size) will grow more rapidly than the average individual. This individual may use a wider range of resources (e.g., larg ...
... become magnified over time by size-dependent competitive superiority. An individual that gains an initial advantage (e.g., by arriving early or by having a slightly larger initial size) will grow more rapidly than the average individual. This individual may use a wider range of resources (e.g., larg ...
Raport privind informa*iile colectate pentru speciile de
... Lynx, is a predator of the forest, being sensitive to deforestation losing much of its habitat due to removal of the forest in order to create land for agriculture, construction and extraction of the oil, also being hunted as predators that causes damages and for fur (international trade is signific ...
... Lynx, is a predator of the forest, being sensitive to deforestation losing much of its habitat due to removal of the forest in order to create land for agriculture, construction and extraction of the oil, also being hunted as predators that causes damages and for fur (international trade is signific ...
What are dry grasslands? Dry grasslands are rich in species
... biotopes that all have relatively dry and nutrient-poor soils. Years ago these were used as common grazing pastures for the nearby villages, and until the late 18th century large areas of Denmark were covered by dry grasslands. Dry grasslands are characterized by the short plant cover and a rich var ...
... biotopes that all have relatively dry and nutrient-poor soils. Years ago these were used as common grazing pastures for the nearby villages, and until the late 18th century large areas of Denmark were covered by dry grasslands. Dry grasslands are characterized by the short plant cover and a rich var ...
Leaf size, specific leaf area and microhabitat
... broad and fine-scale environmental gradients. At a regional scale, evergreen species predominate in the chaparral vegetation, with increasing frequency of droughtdeciduous species in the xeric coastal sage scrub and winter-deciduous taxa in the cooler montane woodlands (Mooney et al. 1970; Parsons a ...
... broad and fine-scale environmental gradients. At a regional scale, evergreen species predominate in the chaparral vegetation, with increasing frequency of droughtdeciduous species in the xeric coastal sage scrub and winter-deciduous taxa in the cooler montane woodlands (Mooney et al. 1970; Parsons a ...
Effects of population-level aggregation
... as a fundamental ecological pattern that provides a useful approach to understanding the dynamics of species composition (Rosenzweig, 1995, 1998; Adler and Lauenroth, 2003; White, 2004; Fridley et al., 2006; White et al., 2006; Carey et al., 2007; Magurran, 2007; White, 2007). In addition, understan ...
... as a fundamental ecological pattern that provides a useful approach to understanding the dynamics of species composition (Rosenzweig, 1995, 1998; Adler and Lauenroth, 2003; White, 2004; Fridley et al., 2006; White et al., 2006; Carey et al., 2007; Magurran, 2007; White, 2007). In addition, understan ...
THE POPULATION BIOLOGY OF INVASIVE SPECIES Ann K. Sakai
... by creating disturbed sites for colonization. Agriculture also facilitates invasion when pests in agro-ecosystems are exposed to agricultural practices for many generations, resulting in selection for characteristics that make them persistent and noxious. ...
... by creating disturbed sites for colonization. Agriculture also facilitates invasion when pests in agro-ecosystems are exposed to agricultural practices for many generations, resulting in selection for characteristics that make them persistent and noxious. ...
Brown Pelican (Pelecanus occidentalis) Colony
... and Denison 2011), threaten breeding and foraging grounds along the Louisiana coast. Over the past decade an average of 80% of Louisiana’s Brown Pelican population nested on only three islands (T. Hess, unpubl. data). Consequently, the loss of one of these colony sites, or individuals from these col ...
... and Denison 2011), threaten breeding and foraging grounds along the Louisiana coast. Over the past decade an average of 80% of Louisiana’s Brown Pelican population nested on only three islands (T. Hess, unpubl. data). Consequently, the loss of one of these colony sites, or individuals from these col ...
Mammalian Biology 88th Annual Meeting of the - JKI
... the zone of former active influence with dead trees; and the zone of the ecotone between zones and the surrounding forest. The territory was inhabited by seven small mammal species, with 83.7% of all trapped individuals being yellow-necked mice (Apodemus flavicollis). Generally, small mammal diversity ...
... the zone of former active influence with dead trees; and the zone of the ecotone between zones and the surrounding forest. The territory was inhabited by seven small mammal species, with 83.7% of all trapped individuals being yellow-necked mice (Apodemus flavicollis). Generally, small mammal diversity ...
Mt Gibson Endangered Wildlife Restoration Project
... strategy at Mt Gibson must ensure reintroduced mammals are not exposed to significant predation from foxes and cats or competition from feral herbivores such as rabbits and goats. A critical threshold issue – which fundamentally shapes the operational design of our Mt Gibson Project – has been consi ...
... strategy at Mt Gibson must ensure reintroduced mammals are not exposed to significant predation from foxes and cats or competition from feral herbivores such as rabbits and goats. A critical threshold issue – which fundamentally shapes the operational design of our Mt Gibson Project – has been consi ...
122. Woodruff, D.S. and G.A.E. Gall. Genetics and conservation. In
... linked to human welfare. Biological diversity refers to the variety and variability among living organisms and the ecosystems in which they interact. Such diversity has evolved over a billion years and is responsible for ecological processes which sustain all life, including that of our own recently ...
... linked to human welfare. Biological diversity refers to the variety and variability among living organisms and the ecosystems in which they interact. Such diversity has evolved over a billion years and is responsible for ecological processes which sustain all life, including that of our own recently ...
Effects of predation and variation in species relative
... levels of variation in the richness and abundance of species within and among communities. Hubbell’s neutral models have drawn attention because they reproduce several characteristic features of natural communities. But neutral models are criticized for ignoring nonrandom processes known to cause sp ...
... levels of variation in the richness and abundance of species within and among communities. Hubbell’s neutral models have drawn attention because they reproduce several characteristic features of natural communities. But neutral models are criticized for ignoring nonrandom processes known to cause sp ...
Diversity effects on production in different light and fertility
... interactions, in which species benefit from the presence of interspecific neighbours, can also drive richnessproduction relationships, but these should be especially dependent upon certain stressful environmental circumstances that limit the importance of competition (Mulder et al. 2001; Cardinale e ...
... interactions, in which species benefit from the presence of interspecific neighbours, can also drive richnessproduction relationships, but these should be especially dependent upon certain stressful environmental circumstances that limit the importance of competition (Mulder et al. 2001; Cardinale e ...
Cats and Predation
... The definition of a native species is an organism that is indigenous to a particular region. The definition of an alien or exotic species is an organism that is introduced either accidentally or deliberately by human actions into places beyond its natural geographical range. Famous examples of alien ...
... The definition of a native species is an organism that is indigenous to a particular region. The definition of an alien or exotic species is an organism that is introduced either accidentally or deliberately by human actions into places beyond its natural geographical range. Famous examples of alien ...
Niche theory and guilds
... So if a niche can only be occupied by one species, but if resources are limited such that competitors must share niche space, how similar in terms of niche can two species be and still coexist? The competitive exclusion principle states that coexistence hinges on niche differentiation (a.k.a. niche ...
... So if a niche can only be occupied by one species, but if resources are limited such that competitors must share niche space, how similar in terms of niche can two species be and still coexist? The competitive exclusion principle states that coexistence hinges on niche differentiation (a.k.a. niche ...
ASSESSING RISKS TO BIODIVERSITY FROM FUTURE
... some cases. The "Buildout" alternative started with the current zoning plans for each municipality and assumed that the full development allowed in each plan would occur. This alternative represented an extreme level of human impact where most remaining undeveloped, but developable, land in Monroe C ...
... some cases. The "Buildout" alternative started with the current zoning plans for each municipality and assumed that the full development allowed in each plan would occur. This alternative represented an extreme level of human impact where most remaining undeveloped, but developable, land in Monroe C ...
First data on the spiders (Aranei) from the northern Gydan Peninsula
... situated in the North of the West Siberian Plain, projecting far out into the Kara Sea, Arctic Ocean, between the Yamal and Taimyr peninsulas. In the West, the Gydan is bordered on the Tazovskaya and Ob’ gulfs, in the East on the Yenisei River Gulf. The peninsula is characterized by a highly indente ...
... situated in the North of the West Siberian Plain, projecting far out into the Kara Sea, Arctic Ocean, between the Yamal and Taimyr peninsulas. In the West, the Gydan is bordered on the Tazovskaya and Ob’ gulfs, in the East on the Yenisei River Gulf. The peninsula is characterized by a highly indente ...
Chapter 47 Kelp Forests and Seagrass Meadows
... reproductive success and reducing the chances of the stocks either being maintained or being brought back to pre-depletion levels (Orth et al., 2006). This will affect catches of fishers and threaten food security. Kelp forest losses will reduce the supply of commercially important alginates and fuc ...
... reproductive success and reducing the chances of the stocks either being maintained or being brought back to pre-depletion levels (Orth et al., 2006). This will affect catches of fishers and threaten food security. Kelp forest losses will reduce the supply of commercially important alginates and fuc ...
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.