drosophila - O`Grady Lab
... Scaptomyza originated in the Hawaiian Archipelago and has subsequently “escaped” from the islands and diversified on the continent. This is a particularly interesting biogeographic pattern, because no other known group of organisms has colonized a continent from Hawai‘i. The genus Scaptomyza, perhaps ...
... Scaptomyza originated in the Hawaiian Archipelago and has subsequently “escaped” from the islands and diversified on the continent. This is a particularly interesting biogeographic pattern, because no other known group of organisms has colonized a continent from Hawai‘i. The genus Scaptomyza, perhaps ...
Determinants of diversity in a naturally fragmented landscape
... (Rzedowski 1986). These habitats were more widespread during the Pleistocene, and were probably the dominant forest-type throughout the lowlands (Martin and Harrell 1959). During climate change associated with the last glaciopluvial event, regional conditions became consistently warmer and drier, an ...
... (Rzedowski 1986). These habitats were more widespread during the Pleistocene, and were probably the dominant forest-type throughout the lowlands (Martin and Harrell 1959). During climate change associated with the last glaciopluvial event, regional conditions became consistently warmer and drier, an ...
Causes, Consequences and Conservation of Biodiversity David
... I sent G. Evelyn Hutchinson a draft of my first book before it was published, and he wrote back and said something like, ‘David, this is all well and interesting, but why ...
... I sent G. Evelyn Hutchinson a draft of my first book before it was published, and he wrote back and said something like, ‘David, this is all well and interesting, but why ...
Brokenhead Wetland Ecological Reserve
... A rare white cedar community also forms part of the wetland area. People have been attracted to this wetland for many years. The local Indigenous communities have used it for collecting medicinal plants, for cultural activities and for hunting, and continue to do so to this day. Orchid lovers and ec ...
... A rare white cedar community also forms part of the wetland area. People have been attracted to this wetland for many years. The local Indigenous communities have used it for collecting medicinal plants, for cultural activities and for hunting, and continue to do so to this day. Orchid lovers and ec ...
Gause`s competitive exclusion principle and “the
... The problem that is presented by the phytoplankton is essentially how it is possible for a number of species to coexist in a relatively isotropic or unstructured environment all competing for the same sorts of materials ...
... The problem that is presented by the phytoplankton is essentially how it is possible for a number of species to coexist in a relatively isotropic or unstructured environment all competing for the same sorts of materials ...
Introduction to Ecology
... become more sophisticated, our need for understanding has become more urgent: over the past few decades, humans have changed the environment on a greater scale than ever before. ...
... become more sophisticated, our need for understanding has become more urgent: over the past few decades, humans have changed the environment on a greater scale than ever before. ...
CTA-041-Mass Extinction-Earth - The World Federation for Coral
... Even with this caution, the figures are still shocking. Rather than the nine extinctions among vertebrates that would be expe cted to have occurred in normal geological circumstances since 1900, their conservative estimate adds in another 468 extinctions, spread among mammals, birds, reptiles, amphi ...
... Even with this caution, the figures are still shocking. Rather than the nine extinctions among vertebrates that would be expe cted to have occurred in normal geological circumstances since 1900, their conservative estimate adds in another 468 extinctions, spread among mammals, birds, reptiles, amphi ...
Terrestrial Invertebrates and Ecological Restoration
... between data collection and availability, as well as impacts on the sampling adequacy, which in turn impacts on the statistical power of a study. In order to be effective for management, monitoring measures should be accurate, precise, and available almost immediately. To date, many projects involvi ...
... between data collection and availability, as well as impacts on the sampling adequacy, which in turn impacts on the statistical power of a study. In order to be effective for management, monitoring measures should be accurate, precise, and available almost immediately. To date, many projects involvi ...
Section 2.1 Summary – pages 35 - 45
... • Parasites have evolved in such a way that they harm, but usually do not kill the host species. ...
... • Parasites have evolved in such a way that they harm, but usually do not kill the host species. ...
Chapter 7: The Extinction Process
... – “best scientific and commercial data available” – made solely on species’ biological status and threats to their existence ...
... – “best scientific and commercial data available” – made solely on species’ biological status and threats to their existence ...
Management Indicator Species
... • Assumption: Population abundance/density of an indicator species has a positive (and linear) correlation with habitat quality. Problem: Density is probably seldom linearly correlated with habitat quality, and sometimes may not even be positively correlated with habitat quality (read Van Horne 1983 ...
... • Assumption: Population abundance/density of an indicator species has a positive (and linear) correlation with habitat quality. Problem: Density is probably seldom linearly correlated with habitat quality, and sometimes may not even be positively correlated with habitat quality (read Van Horne 1983 ...
Photosynthesis
... Fragmentation is the formation of several habitats whose surface area is less than the original habitat. Fragmentation can happen when forests are cleared for agriculture, housing, motorways etc. A habitat corridor is a narrow strips of quality habitat to link otherwise isolated habitats ...
... Fragmentation is the formation of several habitats whose surface area is less than the original habitat. Fragmentation can happen when forests are cleared for agriculture, housing, motorways etc. A habitat corridor is a narrow strips of quality habitat to link otherwise isolated habitats ...
The Magnitude of Local Host Specificity for Phytophagous Insects
... other vegetation types are encountered, our parameters are expected to change (Diserud & Ødegaard 2000). An extrapolation up to 300–550 plant species (trees ⬎10 cm diameter at breast height and lianas) in this type of forest probably would not be problematic if species numbers of plants in this area ...
... other vegetation types are encountered, our parameters are expected to change (Diserud & Ødegaard 2000). An extrapolation up to 300–550 plant species (trees ⬎10 cm diameter at breast height and lianas) in this type of forest probably would not be problematic if species numbers of plants in this area ...
The Value of Biodiversity - Jamaica Clearing
... Biodiversity, as defined by the Convention on Biological Diversity, “means the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, betw ...
... Biodiversity, as defined by the Convention on Biological Diversity, “means the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, betw ...
Envirothon Wildlife
... The endangered shortnose sturgeon's life history is complex. Much of its spawning behavior and early life stages are still not fully understood. The shortnose sturgeon is anadromous, migrating in the Hudson River, it spawns from April-May. Adult sturgeon migrate upriver from their mid-Hudson overwi ...
... The endangered shortnose sturgeon's life history is complex. Much of its spawning behavior and early life stages are still not fully understood. The shortnose sturgeon is anadromous, migrating in the Hudson River, it spawns from April-May. Adult sturgeon migrate upriver from their mid-Hudson overwi ...
Life Under Your Feet: Measuring Soil Invertebrate Diversity
... therefore difficult to decompose (resource quality) leads to dominance by fungal-feeding groups in the soil food web (namely, some taxa of nematodes, mites and Collembola), whereas easily broken-down litter is decomposed primarily by bacteria, which is reflected higher up the food chain (Coleman & C ...
... therefore difficult to decompose (resource quality) leads to dominance by fungal-feeding groups in the soil food web (namely, some taxa of nematodes, mites and Collembola), whereas easily broken-down litter is decomposed primarily by bacteria, which is reflected higher up the food chain (Coleman & C ...
Impacts of Invasive Alien SpeciesImpacts of Invasive Alien
... Biological invasions result from the movement of a species outside of its native range consequent to intentional or accidental human action (Williamson, 1996). When such species pose a threat to natural biodiversity and/or human societies they are referred to as invasive alien species (IAS). The est ...
... Biological invasions result from the movement of a species outside of its native range consequent to intentional or accidental human action (Williamson, 1996). When such species pose a threat to natural biodiversity and/or human societies they are referred to as invasive alien species (IAS). The est ...
acanthaptinus triplehorni, a new genus and species of spider beetle
... Etymology. The generic name is derived from Greek noun “acantha” for spine or thorn modifying the speciose genus Ptinus in reference to the spines found on the sides of the pronotum and the elytral humeral angles of this unique species. Gender: masculine. Remarks. Chitinous lateral pronotal projecti ...
... Etymology. The generic name is derived from Greek noun “acantha” for spine or thorn modifying the speciose genus Ptinus in reference to the spines found on the sides of the pronotum and the elytral humeral angles of this unique species. Gender: masculine. Remarks. Chitinous lateral pronotal projecti ...
this PDF file - Journals at the University of Arizona
... Much of theemphasis in managing rangelands has been based on the conceptsof rangecondition and trend first described by Dyksterhuis (1949). Theseconceptswere well-foundedin existing theoriesof structureand function in plant communities. The concepts remain appealing even 40 years later because they ...
... Much of theemphasis in managing rangelands has been based on the conceptsof rangecondition and trend first described by Dyksterhuis (1949). Theseconceptswere well-foundedin existing theoriesof structureand function in plant communities. The concepts remain appealing even 40 years later because they ...
Life Under Your Feet: Measuring Soil Invertebrate Diversity
... therefore difficult to decompose (resource quality) leads to dominance by fungal-feeding groups in the soil food web (namely, some taxa of nematodes, mites and Collembola), whereas easily broken-down litter is decomposed primarily by bacteria, which is reflected higher up the food chain (Coleman & C ...
... therefore difficult to decompose (resource quality) leads to dominance by fungal-feeding groups in the soil food web (namely, some taxa of nematodes, mites and Collembola), whereas easily broken-down litter is decomposed primarily by bacteria, which is reflected higher up the food chain (Coleman & C ...
The Impact of Invasive Species and the Role of Legislation in their
... experienced by species with certain color patterns. Traditionally cryptic areas may no longer provide the camouflage needed by some species or color morphs and these organisms will relocate to avoid predators. Entire ecosystems are altered by the alga. The ecological devastation often has economic i ...
... experienced by species with certain color patterns. Traditionally cryptic areas may no longer provide the camouflage needed by some species or color morphs and these organisms will relocate to avoid predators. Entire ecosystems are altered by the alga. The ecological devastation often has economic i ...
Section 5.1 Summary – pages 111-120
... Reintroduction and species preservation programs • Reintroduction programs release organisms into an area where the species once lived. • The most successful reintroductions occur when organisms are taken from an area in the wild and transported to a new suitable habitat. ...
... Reintroduction and species preservation programs • Reintroduction programs release organisms into an area where the species once lived. • The most successful reintroductions occur when organisms are taken from an area in the wild and transported to a new suitable habitat. ...
POPULATION DYNAMICS
... • FOLLOW THEM THROUGHOUT THEIR LIFE SPAN • SHOWS LIFE EXPECTANCY AND PROBABILITY OF DEATH FOR INDIVIDUALS AT EACH AGE. ...
... • FOLLOW THEM THROUGHOUT THEIR LIFE SPAN • SHOWS LIFE EXPECTANCY AND PROBABILITY OF DEATH FOR INDIVIDUALS AT EACH AGE. ...
Ecology Notes
... • Swamps, salt marshes, mangroves lagoons and mouths of rivers. • Supports a variety of organisms. • Fish lay their eggs here, and many species of birds migrate here for the winter.This area is flushed out into the sea or ocean not a lot of dead material on the bottom. ...
... • Swamps, salt marshes, mangroves lagoons and mouths of rivers. • Supports a variety of organisms. • Fish lay their eggs here, and many species of birds migrate here for the winter.This area is flushed out into the sea or ocean not a lot of dead material on the bottom. ...
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.