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abstracts - Santa Fe Institute
abstracts - Santa Fe Institute

... Spatial scaling in tropical forest trees: the importance of sampling effort and of phylogenetic structure The high local biodiversity of tropical trees has been amply documented, but beta-diversity -- how species composition changes with geographical distance -- has received much less attention. Rec ...
Species Composition and Seasonal Distribution of Limnetic
Species Composition and Seasonal Distribution of Limnetic

... and two years after draining (Table 3). D. brachyurum was absent in March and May in Leavenworth County State Lake and in December and May in Nemaha County State Lake. Prophet, Andrews and Goulden (1959) also consider this species primarily autumnal. Diaptomus pallidus was found in every sample in t ...
TRA-938: A PARKWAY IN A PRAIRIE: THE RT. HON. HERB GRAY
TRA-938: A PARKWAY IN A PRAIRIE: THE RT. HON. HERB GRAY

... There were a number of sustainable outcomes on the Parkway due to its unique design. By building the highway below-grade with a series of 11 tunnels, the Parkway has re-connected communities on either side of the corridor. A multi-use trail system running the length of the Parkway provides an opport ...
Change over Time
Change over Time

... certain point, it may not be able to recover One way that this can happen is if a species becomes isolated, cut off geographically from others of its species Another way is habitat loss, when land area available for a species to live decreases due to human activity ...
Trophic niches of thirteen damselfishes (Pomacentridae) at the
Trophic niches of thirteen damselfishes (Pomacentridae) at the

... similarities) was then used to statistically test the interspecific differences in stomach contents. Finally, in order to characterize the trophic niche of each species, PRIMER was used to perform a hierarchical clustering, based on applying the Bray–Curtis similarity coefficient to all data from th ...
Neighborhood Effects on Arthropod Diversity and Food Webs
Neighborhood Effects on Arthropod Diversity and Food Webs

... results in changing the food web structure and dynamics in urban areas. Here, we investigate whether local neighborhood landscaping affects biodiversity and food web structure and function of arthropod communities. North Desert Village (NDV) has four residential landscape types including mesic, nati ...
Chapter 4. Offshore intertidal hard substrata: a new habitat
Chapter 4. Offshore intertidal hard substrata: a new habitat

... offshore subtidal hard substratum was already known from the (natural) gravel beds, as well as from (artificial) shipwrecks or oil and gas platforms. Because many subtidal hard substratum species, such as the barnacle Elminius modestus, the amphipod Jassa marmorata, the Japanese oyster Crassostrea g ...
The Ecological Impacts of Non-Native Species on River Otter
The Ecological Impacts of Non-Native Species on River Otter

... Ecological behaviors of the lake trout also make it difficult for them to be maintained naturally through predation. These trout usually inhabit mid-water pelagic areas of the lake, which are out of range of normal otter foraging (Wengeler et al., 2010). Therefore, while these trout can serve as pre ...
Ch 22 Notes
Ch 22 Notes

... descent until their recent divergence from a common ancestor. ...
DFO EEMP Letter - Government of Nova Scotia
DFO EEMP Letter - Government of Nova Scotia

... of the site by marine fish species. Alternatives programs should be explored and implemented where practical and in consultation with DFO. The use of an array of bottom mounted echo-sounders would provide more robust data and would not be subject to the environmental limitations that inhibit vessel ...
Key Point 1—Knowledge of Wild Birds, Mammals
Key Point 1—Knowledge of Wild Birds, Mammals

... made of the prints. Wildlife signs may be real or reproduced. Use a key or field guide to identify wildlife species or signs. Wildlife species or signs may be presented in any ...
1 - contentextra
1 - contentextra

... Lionfish in the Atlantic Ocean and Caribbean One of the main threats to ecosystem biodiversity is the introduction of non-native (i.e. exotic or invasive) species (see textbook p.188). Well-known examples of this are the introduction of the grey squirrel from North America into Europe, where it has ...
APES Review #2
APES Review #2

... Is a relatively inefficient way of tapping photosynthetic production ...
Exploring the Ichetucknee River System: A Stoichiometric
Exploring the Ichetucknee River System: A Stoichiometric

... Field collection of vascular plant and algal species • Collection on a seasonal basis • Used to analyze specimens for C:N and C:P ratios ...
Summary of Stakeholder (CWMOS) Content for Steering Group at 03
Summary of Stakeholder (CWMOS) Content for Steering Group at 03

... 1) there is a very strong and widespread sentiment that full preservation of the status quo is a minimum threshold, and that no further loss of biodiversity, habitat, natural systems etc should be permissible in light of the losses which have already occurred and the sacrifices already made in favou ...
Penicillium astrolabium and Penicillium neocrassum, two new
Penicillium astrolabium and Penicillium neocrassum, two new

... Abstract: We describe two new terverticillate Penicillium species isolated from grapes on the basis of phenotypic and phylogenetic differences from known species. The strains were isolated in the course of a study to establish the mycobiota of grapes in Portugal. Penicillium astrolabium is phenotypi ...
Tree diversity reduces pest damage in mature forests across Europe
Tree diversity reduces pest damage in mature forests across Europe

... Based on a network of more than 200 plots along two explicit orthogonal gradients of tree species richness and latitudes [13] our study demonstrates an overall positive relationship between tree species richness and resistance of broadleaved species to insect defoliators. Although a large part of cr ...
Why Are Invasive Alien Species a Problem?
Why Are Invasive Alien Species a Problem?

... Every species has a natural geographic area in which it is considered part of the native flora and fauna that make up the biodiversity of the region. Some species have a very small geographic range, while others may be found over multiple provinces or even one or more continents. “Alien” species are ...
call diversity and diel
call diversity and diel

... and approach conspecific males. In species-rich tropical forests, large numbers of insect species along with birds and frogs use acoustic signals for mate attraction and territory defence. The ensemble of acoustically communicating species may be considered as an acoustic community similar to other ...
An Introduction to Trilobites
An Introduction to Trilobites

... looking at species specialization and interaction within a community  Unlike niches, more than one type of organism can inhabit the same ecospace ...
Hydrobiologia
Hydrobiologia

... of the United States wrote concerning the large banchiopods: ‘With few exceptions, a pond never contains more than one species of a particular genus at a time’. However, several authors seem to have misinterpreted Pennak, and missed some of the relevant literature. Thus, Weise (1964) notes that the ...
Biodiversity: Patterns, Processes, Loss and Value
Biodiversity: Patterns, Processes, Loss and Value

... produce viable fertile offspring. A biological species is assumed to be genetically and reproductively isolated from other species and is therefore on a unique evolutionary path. In practice, taxonomists rarely test the assumption of reproductive isolation, but rather consider a suite of morphologi ...
English
English

... Freshwater fishes encompass a high number of species and are present in a large range of habitat, sometimes with very specific conditions. Some species are sensitive to changes, while others survive in highly degraded conditions (Marrow & Fischenich 2000). Arid land fishes tend to have a very restri ...
Distribution and ecology of copepods in mountainous regions of the
Distribution and ecology of copepods in mountainous regions of the

... Copepod species richness, patterns of distribution and composition of assemblages were evaluated in high-altitude sites in the Eastern Alps. Diverse habitats were sampled in 160 lentic water bodies from different geologic areas, ranging from acid bog ponds to alkaline karst waters and from small tem ...
Mammals of West River Memorial Park
Mammals of West River Memorial Park

... only the muskrat, which is able to satisfy its total food requirements from within the salt marsh, can be considered a marsh animal. There are definite relationships between topographically controlled patterns of vegetation and animal abundance (Shure 1971). Because of the strict zonation of plant a ...
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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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