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Invasive Species Articles
... says the bee may actually be improving the availability of a lot of flowers. He showed that coffee, for instance, has flourished under these new bees. He and other African bee lovers say it is not even accurate to call them Africanized bees anymore. After decades of a massive and uncontrollable cont ...
... says the bee may actually be improving the availability of a lot of flowers. He showed that coffee, for instance, has flourished under these new bees. He and other African bee lovers say it is not even accurate to call them Africanized bees anymore. After decades of a massive and uncontrollable cont ...
Address
... were conducted within the nonnative range of Chromolaena odorata (L.) R. M. King and H. Robinson at the Xishuangbanna Tropical Botanical Garden (21°560′ N, 101°150′ E; 570 m altitude) of the Chinese Academy of Sciences located in Mengla County, Yunnan Province, southwest China. An outdoor common gar ...
... were conducted within the nonnative range of Chromolaena odorata (L.) R. M. King and H. Robinson at the Xishuangbanna Tropical Botanical Garden (21°560′ N, 101°150′ E; 570 m altitude) of the Chinese Academy of Sciences located in Mengla County, Yunnan Province, southwest China. An outdoor common gar ...
The role of dispersal in shaping plant community Kathryn M. Flinn
... 3. We address two hypotheses. First, we ask whether species with short-distance dispersal mechanisms are more dispersal-limited than species with adaptations for long-distance dispersal. Second, because wetland habitats are more fragmented than upland habitats in this forested area, we test the hypo ...
... 3. We address two hypotheses. First, we ask whether species with short-distance dispersal mechanisms are more dispersal-limited than species with adaptations for long-distance dispersal. Second, because wetland habitats are more fragmented than upland habitats in this forested area, we test the hypo ...
Keystone Predator
... both plants and animals. Within a community, producers, herbivores, predators, and omnivores are linked through their feeding relationships. If you create a diagram that connects different species and food chains together based on these relationships, the result is called a food web diagram. Ecosyst ...
... both plants and animals. Within a community, producers, herbivores, predators, and omnivores are linked through their feeding relationships. If you create a diagram that connects different species and food chains together based on these relationships, the result is called a food web diagram. Ecosyst ...
Diversity, productivity and temporal stability in the economies ARTICLE IN PRESS
... replace those that do not. Selection pressures operate in both nature and the market, with surviving entities thus being relatively more efficient. Over time entities evolve, pushed by conscious search or by recombination and differential success, to more successful formulas for dealing with their en ...
... replace those that do not. Selection pressures operate in both nature and the market, with surviving entities thus being relatively more efficient. Over time entities evolve, pushed by conscious search or by recombination and differential success, to more successful formulas for dealing with their en ...
COMMUNITY INVASIBILITY, RECRUITMENT LIMITATION, AND GRASSLAND BIODIVERSITY D T
... initial species richness of plots, suggesting that species-rich sites were more resistant to invasion. Plot invasibility also depended on the abundances and species richness of plant functional groups in the plots, but was independent of seed size and of total plant cover. The major functional group ...
... initial species richness of plots, suggesting that species-rich sites were more resistant to invasion. Plot invasibility also depended on the abundances and species richness of plant functional groups in the plots, but was independent of seed size and of total plant cover. The major functional group ...
American Burying Beetle Nicrophorus americanus
... The species has one generation over the period of a year, with individuals existing from the summer to their death in the following year. Individuals will typically have the opportunity to reproduce only once. Following emergence from the ground, in the late summer or early fall of the year in which ...
... The species has one generation over the period of a year, with individuals existing from the summer to their death in the following year. Individuals will typically have the opportunity to reproduce only once. Following emergence from the ground, in the late summer or early fall of the year in which ...
Kildare`s Hedgerows
... better for wildlife than short, narrow ones, especially if there are hedgerow trees. Kildare’s hedgerows were found to contain a high proportion of trees and lots of young trees which is good news for the sustainability of the resource. Occasional saplings of all species, should be selected and allo ...
... better for wildlife than short, narrow ones, especially if there are hedgerow trees. Kildare’s hedgerows were found to contain a high proportion of trees and lots of young trees which is good news for the sustainability of the resource. Occasional saplings of all species, should be selected and allo ...
Download technical report 191
... The Maunakea Invasive Species Management Plan documents the objectives, policies and procedures of the Office of Mauna Kea Management for the prevention, detection and management of invasive plant and animal species on lands managed by the University of Hawai‘i on Maunakea. The develop ...
... The Maunakea Invasive Species Management Plan documents the objectives, policies and procedures of the Office of Mauna Kea Management for the prevention, detection and management of invasive plant and animal species on lands managed by the University of Hawai‘i on Maunakea. The develop ...
Habitat: Shallow Rocky Reef Species (0
... take an ecosystem-based approach to their wildlife conservation plan (WCP), one that encompasses ecological relationships among species, trophic levels and habitats. Traditionally, conservation management has taken a single species perspective focusing on a species at risk of extinction or localized ...
... take an ecosystem-based approach to their wildlife conservation plan (WCP), one that encompasses ecological relationships among species, trophic levels and habitats. Traditionally, conservation management has taken a single species perspective focusing on a species at risk of extinction or localized ...
Competition - WordPress.com
... Can Parasites Manipulate Their Hosts? • In some instances, parasites do manipulate their hosts. • For example, nematodes (roundworms) parasitize a species of treedwelling ants and lay eggs in the ant’s posterior-most body region, causing it to appear red instead of the normal black color. • Infecte ...
... Can Parasites Manipulate Their Hosts? • In some instances, parasites do manipulate their hosts. • For example, nematodes (roundworms) parasitize a species of treedwelling ants and lay eggs in the ant’s posterior-most body region, causing it to appear red instead of the normal black color. • Infecte ...
Challenges in Environmental Ethics
... Can they suffer? is not as simple as Bentham thought. What we ought to do depends on what is. The is of nature differs significantly from the is of culture, even when similar suffering is present in both. Some ethicists will insist that at least in culture we can minimize animal pain, and that will ...
... Can they suffer? is not as simple as Bentham thought. What we ought to do depends on what is. The is of nature differs significantly from the is of culture, even when similar suffering is present in both. Some ethicists will insist that at least in culture we can minimize animal pain, and that will ...
PREDATOR IDENTITY AND ECOLOGICAL IMPACTS
... discrete alternative states. Predators also differed in their ability to suppress either the total number or biomass of anurans. Thus, performance of larval anurans was dependent upon the identity of the predator. Moreover, the identity of predators judged similar and their degree of similarity depe ...
... discrete alternative states. Predators also differed in their ability to suppress either the total number or biomass of anurans. Thus, performance of larval anurans was dependent upon the identity of the predator. Moreover, the identity of predators judged similar and their degree of similarity depe ...
... home to a historically depauperate and highly endemic fish fauna, have been particularly affected by anthropogenic disturbances (Minckley & Deacon 1968), due in part to the region’s arid climate and rapidly expanding human population. While degradation of the physical environment is often argued to ...
Scale, Environment, and Trophic Status: The Context Dependency
... was to limit sampling to intertidal habitats that were as physically similar as possible. These criteria and sampling methods are described in more detail by Schoch and Dethier (1996). Local and Regional Pool Estimation Definitions of “local” and “regional” in the literature vary dramatically and ar ...
... was to limit sampling to intertidal habitats that were as physically similar as possible. These criteria and sampling methods are described in more detail by Schoch and Dethier (1996). Local and Regional Pool Estimation Definitions of “local” and “regional” in the literature vary dramatically and ar ...
Download publication
... one to several ants occurred predominantly on two tree species, P. albidus and C. tomentosum (see ‘‘Results’’ section). Consequently, I assigned all individual trees of these two species that had five or more sampled ants during one or more sampling events as ‘ant-occupied trees’ (n = 16). These 16 ...
... one to several ants occurred predominantly on two tree species, P. albidus and C. tomentosum (see ‘‘Results’’ section). Consequently, I assigned all individual trees of these two species that had five or more sampled ants during one or more sampling events as ‘ant-occupied trees’ (n = 16). These 16 ...
Body size in ecological networks
... Niche models: a model whereby species diets are ordered hierarchically within a single (niche) dimension, with a subset of basal species that do not feed on other species. A niche value is assigned to each consumer species. Each consumer can feed on all species that fall within a range of niche valu ...
... Niche models: a model whereby species diets are ordered hierarchically within a single (niche) dimension, with a subset of basal species that do not feed on other species. A niche value is assigned to each consumer species. Each consumer can feed on all species that fall within a range of niche valu ...
Orchard Grass
... stimulate shoot growth and Orchard Grass may become a problem in lawns. Since it does not aggressively spread vegetatively, manually pulling out young plants can be effective for small areas if it is completed in early summer before seeds set. In some locales, Orchard Grass is reported to decline af ...
... stimulate shoot growth and Orchard Grass may become a problem in lawns. Since it does not aggressively spread vegetatively, manually pulling out young plants can be effective for small areas if it is completed in early summer before seeds set. In some locales, Orchard Grass is reported to decline af ...
Effects of Garden Attributes on Ant (Formicidae) Species Richness
... (Trichoplusia ni) and Squash Bugs (Anasa tristis). Results indicated that community gardens have the capacity to support a multitude of ant species; 19 species from 12 genera were sampled. However, soil texture, intense tilling, and distance from less disturbed areas significantly reduces species ri ...
... (Trichoplusia ni) and Squash Bugs (Anasa tristis). Results indicated that community gardens have the capacity to support a multitude of ant species; 19 species from 12 genera were sampled. However, soil texture, intense tilling, and distance from less disturbed areas significantly reduces species ri ...
AP® Environmental Science - AP Central
... science classes, generally they do not have an understanding of the role that energy has in their biological environment. In high school physics class, students are usually taught to define energy as the ability to do work, which might be expressed as a force moving through a distance. They are furt ...
... science classes, generally they do not have an understanding of the role that energy has in their biological environment. In high school physics class, students are usually taught to define energy as the ability to do work, which might be expressed as a force moving through a distance. They are furt ...
Ecosystem Integrity - Ecology and Society
... rates. They attempt to prevent any shift toward a new mode of functioning, by reducing environmental stochasticity that could push the system away from its optimal state and cause undesirable economic or ecological effects. This imposed resiliency reduces the sensitivity of the system to exogenous f ...
... rates. They attempt to prevent any shift toward a new mode of functioning, by reducing environmental stochasticity that could push the system away from its optimal state and cause undesirable economic or ecological effects. This imposed resiliency reduces the sensitivity of the system to exogenous f ...
Characterization of topological keystone species Local, global and
... trophic relationships with a particular species. However, node degree represents the most local index characterizing the centrality of a node in a network which excludes the longrange interactions arising in the network (Jordán et al., 2006). These indirect effects have been recognized as relevant ...
... trophic relationships with a particular species. However, node degree represents the most local index characterizing the centrality of a node in a network which excludes the longrange interactions arising in the network (Jordán et al., 2006). These indirect effects have been recognized as relevant ...
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... form of predation by large, dominant redial forms on the sporocysts and rediae of subordinate species. These interactions are largely hierarchical, although in some systems priority effects have been observed, and in one case a sporocyst species replaced a redial species by strong non-predatory anta ...
... form of predation by large, dominant redial forms on the sporocysts and rediae of subordinate species. These interactions are largely hierarchical, although in some systems priority effects have been observed, and in one case a sporocyst species replaced a redial species by strong non-predatory anta ...
a nearly neutral model of biodiversity
... Abstract. S. P. Hubbell’s unified neutral theory of biodiversity has stimulated much new thinking about biodiversity. However, empirical support for the neutral theory is limited, and several observations are inconsistent with the predictions of the theory, including positive correlations between tra ...
... Abstract. S. P. Hubbell’s unified neutral theory of biodiversity has stimulated much new thinking about biodiversity. However, empirical support for the neutral theory is limited, and several observations are inconsistent with the predictions of the theory, including positive correlations between tra ...
Asymmetric larval interactions between introduced and indigenous
... may play a stronger role for HA than for C. septempunctata in promoting the successful invasion of North America. Keywords Coccinellidae . Competition . Indigenous species . Intraguild predation . Invasive species ...
... may play a stronger role for HA than for C. septempunctata in promoting the successful invasion of North America. Keywords Coccinellidae . Competition . Indigenous species . Intraguild predation . Invasive species ...
Introduced species
![](https://commons.wikimedia.org/wiki/Special:FilePath/Melilotus_alba_bgiu.jpg?width=300)
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.