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White-nose Syndrome Jumps to a - Bat Conservation International
White-nose Syndrome Jumps to a - Bat Conservation International

... May 20, 2010 (Austin, TX) - The White-nose Syndrome (WNS) fungus has taken a frightening leap that apparently opens western states and perhaps Mexico to this deadly wildlife disease that already has decimated bats throughout the eastern United States. The fungus has been confirmed for the first time ...
document
document

... ecological complexes of which they are part, including the diversity within species, between species and of ecosystems.’ • Biodiversity is the variety of life on Earth and the essential interdependence of all living things • Scientists have identified more than 2 million species. Tens of millions -- ...
Patterns of cooccurrences in a killifish
Patterns of cooccurrences in a killifish

... Rooney et al. 2008; Arim et al. 2010). Although each doi:10.1111/aec.12103 ...
Restoration of tropical dry forests in Hawaii: Can
Restoration of tropical dry forests in Hawaii: Can

... individuals. While we were encouraged to find that numerous native understory species were still present, it appeared that the thick stands of fountain grass that blanketed most of the ground of this forest remnant would inevitably thwart their regeneration as well. We also found that fountain grass ...
Restoration of tropical dry forests in Hawaii
Restoration of tropical dry forests in Hawaii

... individuals. While we were encouraged to find that numerous native understory species were still present, it appeared that the thick stands of fountain grass that blanketed most of the ground of this forest remnant would inevitably thwart their regeneration as well. We also found that fountain grass ...
Appendix S1. Details of Species Distribution Modeling and
Appendix S1. Details of Species Distribution Modeling and

... While these values may underestimate the actual but theoretical ceiling possible, they provide a consistent upper bound that can be used across all scenarios for ranking and comparison of outcomes. Density dependence was implemented by reducing rates of survival and growth (due to intraspecific comp ...
N - McMaster Department of Biology
N - McMaster Department of Biology

... As species arrive and settle in the new habitat, they begin to interact. The first plant and microbial colonizers may, for a short time, have to deal with the physical environment alone but soon consumers will discover them as food, population growth will lead to competition for resources, modificat ...
Burnets, cyanide-bombs and colonisation, Dr Mika
Burnets, cyanide-bombs and colonisation, Dr Mika

... Cyanogenic glucosides are prevalent defense compounds in plants, and also present in some butterfly and moth species, especially in burnet moths. The compounds are toxic due to the release of hydrogen cyanide during enzymatic degradation. Consequently cyanogenic glucosides and their degrading enzyme ...
The role of ecophysiological studies in the genus Prosopis
The role of ecophysiological studies in the genus Prosopis

... impact than water availability on the growth traits of species in arid regions, as these abiotic parameters influence seed production, stem growth and root development (Cony et al., 1998; Squeo, 2007). Thus, it is important to investigate the effects of these environmental factors on the reproductiv ...
COMPETITION
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Designing an Ecological Study
Designing an Ecological Study

... Where do ecologists get their hypotheses? The stimulus for almost all ecological research, whether in the field or the laboratory, comes initially from the observation of some distinctive pattern in nature. Usually, an initial observation is of some difference between two or more ecological situatio ...
Vertebrate species introductions in the United States and its territories
Vertebrate species introductions in the United States and its territories

... of these species were presented in Witmer et al. (2007, non-fish vertebrates) and in Fuller et al. (1999, fish species). Our focus was on the United States mainland and Hawaii, so some of the species introduced to United States territories (e.g., Virgin Islands, Puerto Rico, American Samoa, Guam, an ...
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Landscape constraints on functional diversity of birds and insects in

... Numerous Neotropical studies of biodiversity in coffee and cacao agroforests provide a sound foundation (Komar 2006), but research in other agroecosystems (particularly traditional mixed agroforests) is especially important because some of these studies (e.g., Naidoo 2004) have found patterns contra ...
Chapter 47 Kelp Forests and Seagrass Meadows
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... Kelp die-off along the coasts of Europe has been reported (Raybaud et al., 2013; Brodie et al., 2014), e.g. in Norway (Moy and Christie, 2012), as well as off the coast of Australia (Smale and Wernberg, 2013; Wernberg et al., 2013). In addition, changes in the distribution of species have been repor ...
Dynamics of Ecosystems
Dynamics of Ecosystems

... generally out of reach, although they can be “mined” by humans. The water table is recharged by water that percolates through the soil from precipitation as well as by water that seeps downward from ponds, lakes, and streams. The deep aquifers are recharged very slowly from the water table. Groundwa ...
Arid Recovery
Arid Recovery

... The cost of installing the fence was around $10,000 per km plus the cost of ongoing maintenance. The height of the fence in the Red Lake expansion was reduced from 1.8m to 1.15m so that it is more cost effective. This lower design allows kangaroos to access the area, making it a more natural ecosyst ...
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... – If not controlled, results in undesirable plants dominating the pasture (increasers) and desirable plants decreasing or ...
Caulerpa taxifolia - SE-EPPC
Caulerpa taxifolia - SE-EPPC

... U.S. and Canada Distribution: Since the California infestations were detected at an early stage, eradication efforts were initiated in 2001. After six years and more than $7 million, the plant was declared to be eradicated from these two sites in July, 2007. It is not known to occur elsewhere in the ...
Biodiversity and resilience of arthropod communities after fire
Biodiversity and resilience of arthropod communities after fire

... (0844¢E, 4609¢N). The sampling design was based on a space-for-time substitution (Pickett 1989). For this purpose the slope was divided into six sectors of approximately 1 km2, in which a total of 22 study sites (three to four per sector) were selected. The sites were grouped into three categories ...
The Dynamics of Nature: Succession
The Dynamics of Nature: Succession

... community after the community has been disturbed. Examples of natural disturbances include forest fires and strong winds. Examples of human-made disturbances include cutting down forests for agriculture or urban development. In secondary succession, soil already exists and needs to be revitalized. F ...
6-3 Biodiversity
6-3 Biodiversity

... Throughout history, humans have pushed some animal species to extinction by hunting them for food or other products. Today, in the U.S., endangered species are protected from hunting. ...
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Habitat filtering by landscape and local forest composition in native

... we contrasted the responses of species with overlapping habitat requirements, which therefore might be expected to co-occur and possibly interact over resources. New Zealand forests are an ideal study area to address this aim. Human activities since the mid 19th century involved the replacement of l ...
Plant–pollinator interactions and the assembly of plant
Plant–pollinator interactions and the assembly of plant

... about the ecological factors that influence the establishment of a species in a community. A study of invasive grasses in California suggests that successful invaders are more distantly related to the existing species in a community than would be expected by random chance [61], suggesting a role for ...
Estimating Site Occupancy for Four Threatened Mammals in
Estimating Site Occupancy for Four Threatened Mammals in

... frequently consumed in rural parts of Indochina. In Laos, serow bones, feet, teeth, and other body parts are used for medicinal purposes (Baird 1995). Furthermore, there is evidence of an active cross-border trade in serow parts from Laos into Thailand (Nash 1997). Relatively little is known about ...
Species-species association strengths
Species-species association strengths

... randomly on various habitats by chance. A positive association indicated that a species was found more often than expected by chance, while a negative value indicated that a species was found less often then by chance. Species habitat associations were determined by combining UPC substrate and relie ...
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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.
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