Marsh Frog - GB non-native species secretariat
... vegetation. Tadpoles grow through the summer and metamorphose to small frogs approximately September. ...
... vegetation. Tadpoles grow through the summer and metamorphose to small frogs approximately September. ...
O. triseriatus
... ● Species-specific differences in relative sizes may contribute to the greater vulnerability of A. albopictus to predation. ...
... ● Species-specific differences in relative sizes may contribute to the greater vulnerability of A. albopictus to predation. ...
NatureServe Explorer - Global Invasive Species Information Network
... in addition to Scientific Name and Author which are Concept Reference Citation and Name Used in Concept Reference. These additional fields give a reference to a specific circumscription of the element (a circumscription is a definition of the element’s boundaries which define its concept). Sometimes ...
... in addition to Scientific Name and Author which are Concept Reference Citation and Name Used in Concept Reference. These additional fields give a reference to a specific circumscription of the element (a circumscription is a definition of the element’s boundaries which define its concept). Sometimes ...
Effects of Natural Forest Fragmentation on a Hawaiian Spider
... entirely native (Wagner et al. 1990). These characteristics, combined with the well-documented ages of the ßows, make it possible to study the ecological effects and possible evolutionary consequences associated with fragmentation, with minimal human intervention, and over relatively long periods of ...
... entirely native (Wagner et al. 1990). These characteristics, combined with the well-documented ages of the ßows, make it possible to study the ecological effects and possible evolutionary consequences associated with fragmentation, with minimal human intervention, and over relatively long periods of ...
Response Diversity
... • Diversity of responses to environmental change among species that contribute to the same ecosystem function • Diversity within functional groups is important to the adaptive capacity of ecosystems; not just species richness ...
... • Diversity of responses to environmental change among species that contribute to the same ecosystem function • Diversity within functional groups is important to the adaptive capacity of ecosystems; not just species richness ...
petition to list two arizona plants from the sky islands as threatened
... The two plant species presented in this petition-- Bartram stonecrop (Graptopetalum bartramii) and Beardless chinch weed (Pectis imberbis) are in danger of becoming extinct and need Endangered Species Act protection to ensure their continued survival. Bartram stonecrop is a rare succulent known only ...
... The two plant species presented in this petition-- Bartram stonecrop (Graptopetalum bartramii) and Beardless chinch weed (Pectis imberbis) are in danger of becoming extinct and need Endangered Species Act protection to ensure their continued survival. Bartram stonecrop is a rare succulent known only ...
Response of a semidesert grassland to 16 years of rest from grazing
... cattle from the sanctuary did infIuence vegetation change. Grazed 1984 transects and 197 1 association data appeared generally similar in midgrass cover (Table 3). Ungrazed transects, in contrast, were distinguished by the abundance of plains lovegrass (Table 3). In addition, given the homogeneity o ...
... cattle from the sanctuary did infIuence vegetation change. Grazed 1984 transects and 197 1 association data appeared generally similar in midgrass cover (Table 3). Ungrazed transects, in contrast, were distinguished by the abundance of plains lovegrass (Table 3). In addition, given the homogeneity o ...
Ecological Engineering – a strategy to restore biodiversity and
... of the crop, species of both pests and natural enemies move in to inhabit it. The bunds that are richly endowed with floral species and homes of natural enemies become the sources of the predators, such as spiders and crickets. They feed on the initial inhabitants, the detritivores, such as midges a ...
... of the crop, species of both pests and natural enemies move in to inhabit it. The bunds that are richly endowed with floral species and homes of natural enemies become the sources of the predators, such as spiders and crickets. They feed on the initial inhabitants, the detritivores, such as midges a ...
A Game-Theoretic Model for Punctuated Equilibrium
... and contribute revolutionary morphological changes. Following these speciation events, an evolutionary stable ecosystem rapidly evolves, where lineages are in stasis. Unfortunately, how changes occur during the speciation event cannot be understood from the fossil record which is especially incomple ...
... and contribute revolutionary morphological changes. Following these speciation events, an evolutionary stable ecosystem rapidly evolves, where lineages are in stasis. Unfortunately, how changes occur during the speciation event cannot be understood from the fossil record which is especially incomple ...
a comparison of maximum sprint speed among the five
... of its latitudinal range compared to the other two species (Conant and Collins 1998). Variation in sprint speed and its effects on spatial distribution of sympatric congeners has been well documented among Caribbean Anolis (Irschick and Losos 1998). However, many of these species exhibit an increase ...
... of its latitudinal range compared to the other two species (Conant and Collins 1998). Variation in sprint speed and its effects on spatial distribution of sympatric congeners has been well documented among Caribbean Anolis (Irschick and Losos 1998). However, many of these species exhibit an increase ...
Tree heterogeneity, resource availability, and larger scale processes
... communities are usually described as interactive and therefore determined by local processes. In this paper we tested two hypotheses linked to the question of why there is local variation in arboreal ant species richness in the Brazilian savanna (‘cerrado’). The hypotheses are: (i) there is a positi ...
... communities are usually described as interactive and therefore determined by local processes. In this paper we tested two hypotheses linked to the question of why there is local variation in arboreal ant species richness in the Brazilian savanna (‘cerrado’). The hypotheses are: (i) there is a positi ...
Biodiversity - University of London International Programmes
... This is one of a series of subject guides published by the University. We regret that due to pressure of work the author is unable to enter into any correspondence relating to, or arising from, the guide. If you have any comments on this subject guide, favourable or unfavourable, please use the form ...
... This is one of a series of subject guides published by the University. We regret that due to pressure of work the author is unable to enter into any correspondence relating to, or arising from, the guide. If you have any comments on this subject guide, favourable or unfavourable, please use the form ...
Intraguild predation: a widespread interaction related to
... Working with trophospecies can alter the interpretation of results; however, it should be considered that some of the empirical observations of IGP (Schoener 1989; Spiller & Schoener 1994, 1998) and related theoretical predictions (Courchamp et al. 1999) are based on aggregated species (e.g. birds, ...
... Working with trophospecies can alter the interpretation of results; however, it should be considered that some of the empirical observations of IGP (Schoener 1989; Spiller & Schoener 1994, 1998) and related theoretical predictions (Courchamp et al. 1999) are based on aggregated species (e.g. birds, ...
COMMUNITY INVASIBILITY, RECRUITMENT LIMITATION, AND GRASSLAND BIODIVERSITY D T
... 1991, were the only species to have significantly lower cover in 1995 than in 1991. However, there was no detectable difference between their abundance in 1995 in plots to which they had been added as seed vs. plots to which they had not been added (Table 1), suggesting that the 1991–1995 change was ...
... 1991, were the only species to have significantly lower cover in 1995 than in 1991. However, there was no detectable difference between their abundance in 1995 in plots to which they had been added as seed vs. plots to which they had not been added (Table 1), suggesting that the 1991–1995 change was ...
Gringos en el bosque: introduced tree invasion in a
... plus Araucaria araucana were far less numerous and 6 other species were found fewer than 10 times each. Even those species found repeatedly were represented overwhelmingly by small individuals, and the great majority of introduced individuals were found not in native forest proper, but in somewhat o ...
... plus Araucaria araucana were far less numerous and 6 other species were found fewer than 10 times each. Even those species found repeatedly were represented overwhelmingly by small individuals, and the great majority of introduced individuals were found not in native forest proper, but in somewhat o ...
Freshwater Fish Richness
... Populations/ESUs of only a few species in Ontario identified, none comprehensively. ...
... Populations/ESUs of only a few species in Ontario identified, none comprehensively. ...
Generalist Predators (Coleoptera: Carabidae, Staphylinidae
... Baker 1985). Baker (1985) worked with Australian carabids not known from Ontario, whereas Snider (1984) studied species typical of a Michigan forest. Both of these studies concerned close relatives of species known from agricultural Þelds. We hypothesized that one or more generalist predatory beetle ...
... Baker 1985). Baker (1985) worked with Australian carabids not known from Ontario, whereas Snider (1984) studied species typical of a Michigan forest. Both of these studies concerned close relatives of species known from agricultural Þelds. We hypothesized that one or more generalist predatory beetle ...
Maintaining a landscape that facilitates range shifts for terrestrial
... abilities and reproductive capabilities. If the goal was simply to maintain genetic connectivity among populations, a few individuals occasionally reaching the new area might be enough, as even a few new genes can make a difference in an isolated population (Soule and Simberloff 1986), and gene flow ...
... abilities and reproductive capabilities. If the goal was simply to maintain genetic connectivity among populations, a few individuals occasionally reaching the new area might be enough, as even a few new genes can make a difference in an isolated population (Soule and Simberloff 1986), and gene flow ...
preliminary proofs — not for distribution - Forest Dynamics Lab
... Fall Line occur almost entirely within alluvial river valleys. These species are mostly absent on upland surfaces and therefore have a noncontiguous distribution within this physiographic region. These species, to varying degrees, can tolerate floods that typically occur during the winter and spring ...
... Fall Line occur almost entirely within alluvial river valleys. These species are mostly absent on upland surfaces and therefore have a noncontiguous distribution within this physiographic region. These species, to varying degrees, can tolerate floods that typically occur during the winter and spring ...
invasive species - the National Sea Grant Library
... ecosystem changes that profoundly alter the landscape and the ecosystem services we value. For example, bluegrass in Kentucky and some other ecosystems we take for granted in the United States are actually a result of successful invasions by species introduced by colonists. Overall, our knowledge of ...
... ecosystem changes that profoundly alter the landscape and the ecosystem services we value. For example, bluegrass in Kentucky and some other ecosystems we take for granted in the United States are actually a result of successful invasions by species introduced by colonists. Overall, our knowledge of ...
Conservation and Ecosystem Powerpoint
... Trees declined due to predation by elk Trees are crucial for beavers, songbirds, and fish With reintroduction of wolves, trees and other species rebounded © 2013 Pearson Education, Inc. ...
... Trees declined due to predation by elk Trees are crucial for beavers, songbirds, and fish With reintroduction of wolves, trees and other species rebounded © 2013 Pearson Education, Inc. ...
Ecological Succession
... • Natural, gradual changes in the types of species that live in an area; can be primary or secondary • The gradual replacement of one plant community by another through natural processes over time ...
... • Natural, gradual changes in the types of species that live in an area; can be primary or secondary • The gradual replacement of one plant community by another through natural processes over time ...
Ecological Succession - Miami Beach Senior High School
... • Natural, gradual changes in the types of species that live in an area; can be primary or secondary • The gradual replacement of one plant community by another through natural processes over time ...
... • Natural, gradual changes in the types of species that live in an area; can be primary or secondary • The gradual replacement of one plant community by another through natural processes over time ...
The effects of interaction of biotic and abiotic factors
... approximately 50% of the estimated global below-ground organic C (Tarnocai et al. 2009). In particular, climate changes may turn cold biomes from sinks to sources depending on the balance between Gross Ecosystem Photosynthesis (GEP) and ecosystem respiration (ER) and the resulting Net Ecosystem Exch ...
... approximately 50% of the estimated global below-ground organic C (Tarnocai et al. 2009). In particular, climate changes may turn cold biomes from sinks to sources depending on the balance between Gross Ecosystem Photosynthesis (GEP) and ecosystem respiration (ER) and the resulting Net Ecosystem Exch ...
Plant succession: theory and applications
... Downloaded from ppg.sagepub.com at PENNSYLVANIA STATE UNIV on September 20, 2016 ...
... Downloaded from ppg.sagepub.com at PENNSYLVANIA STATE UNIV on September 20, 2016 ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.