Causes of extinction
... • Current mass extinctions are notable because – It is the only such event triggered by a single species (Homo sapien) – A few million years is a long time to wait for recovery – It is not clear that biodiversity will rebound this time • Humans are utilizing resources that new species would need to ...
... • Current mass extinctions are notable because – It is the only such event triggered by a single species (Homo sapien) – A few million years is a long time to wait for recovery – It is not clear that biodiversity will rebound this time • Humans are utilizing resources that new species would need to ...
Other Natural Lands Projects
... season due its small watershed. When this area is considered together with the Borers Creek Conservation Area located north of York Rd., they form the last natural corridor between Lake Ontario and Niagara Escarpment that is not interrupted by a 400 series highway. Within Hamilton region, Hopkins Wo ...
... season due its small watershed. When this area is considered together with the Borers Creek Conservation Area located north of York Rd., they form the last natural corridor between Lake Ontario and Niagara Escarpment that is not interrupted by a 400 series highway. Within Hamilton region, Hopkins Wo ...
17 Seven forms of rarity
... abundant where they occur. These species tend to be precarious as a result of habitat destruction. Mangrove swamps often are endangered because they are a habitat that many people find objectionable for a variety of reasons, usually that the trees are between them and the sea. In contrast to mangrov ...
... abundant where they occur. These species tend to be precarious as a result of habitat destruction. Mangrove swamps often are endangered because they are a habitat that many people find objectionable for a variety of reasons, usually that the trees are between them and the sea. In contrast to mangrov ...
Slide 1
... ^ Sign types to be recorded are pugmark (trails), scats (Old: dry with hairs and bones visible; fresh: dry but intact with shiny surface; very fresh: soft moist, and smelly), scraps, scent marks (spray, rolling), rake marks on trunks, vocalization (roaring), actual sighting. 1) Has any tigress with ...
... ^ Sign types to be recorded are pugmark (trails), scats (Old: dry with hairs and bones visible; fresh: dry but intact with shiny surface; very fresh: soft moist, and smelly), scraps, scent marks (spray, rolling), rake marks on trunks, vocalization (roaring), actual sighting. 1) Has any tigress with ...
SF Ev L3 Fossils
... Half life = 5730 years, so useful only in specimens less than 50,000 years old E.g. organic material, Egyptian mummies, mammoths, NOT most fossils ...
... Half life = 5730 years, so useful only in specimens less than 50,000 years old E.g. organic material, Egyptian mummies, mammoths, NOT most fossils ...
Intertidal Zonation Does Species Diversity
... Our hypothesis that species diversity decreases with tidal elevation was supported by the Shannon-Wiener Index and by Dominance, but not by Species bchness. As predicted, a few tolerant species dominated the higher zone whereas a number of species were more evenly represented in the lower zones. In ...
... Our hypothesis that species diversity decreases with tidal elevation was supported by the Shannon-Wiener Index and by Dominance, but not by Species bchness. As predicted, a few tolerant species dominated the higher zone whereas a number of species were more evenly represented in the lower zones. In ...
Part 7 (10 points)
... Competition: Competition can occur between members of different species. This type of competition can lead to evolutionary change. Over time, the species may evolve to occupy different places. What other species does your species compete with for resources (food, water, shelter, space)? Predatio ...
... Competition: Competition can occur between members of different species. This type of competition can lead to evolutionary change. Over time, the species may evolve to occupy different places. What other species does your species compete with for resources (food, water, shelter, space)? Predatio ...
LESSON3 Distribution and hotspots
... often adjacent to each other e.g. Cape Floristic Province, South Africa ...
... often adjacent to each other e.g. Cape Floristic Province, South Africa ...
River Invesion
... was recorded by our co-researchers later from the same area. Aquarium trade is possibly an important vector for its release in rivers and associated streams of Panvel area. Piaractus brachypomus and Pygocentrus nattereri are Amazonian natives found in Colombia, Venezuela, Peru, Bolivia and Brazil. I ...
... was recorded by our co-researchers later from the same area. Aquarium trade is possibly an important vector for its release in rivers and associated streams of Panvel area. Piaractus brachypomus and Pygocentrus nattereri are Amazonian natives found in Colombia, Venezuela, Peru, Bolivia and Brazil. I ...
C. Density
... d For trend comparisons in herbaceous plant communities, basal cover is generally considered to be the most stable. It does not vary as much due to climatic fluctuations or current-year grazing. ...
... d For trend comparisons in herbaceous plant communities, basal cover is generally considered to be the most stable. It does not vary as much due to climatic fluctuations or current-year grazing. ...
Tasmanian Bettong (Bettongia gaimardi) - accessible
... conservation and educational benefits to other conservation/habitat rehabilitation programs. For example, reintroducing the Brush-tailed Bettong to Hattah-Kulkyne National Park could provide a perspective of total habitat management to the park's vegetation management program. However, it will proba ...
... conservation and educational benefits to other conservation/habitat rehabilitation programs. For example, reintroducing the Brush-tailed Bettong to Hattah-Kulkyne National Park could provide a perspective of total habitat management to the park's vegetation management program. However, it will proba ...
Habitat Fragmentation: Effects and Implications
... Fragmentation has been considered as one of the most major factors that lead to the decline of many wildlife species (Brittingham and Temple 1983, Yahner 1988, Winslow et al. 2000) because fragmentation tends to decrease population productivity (Robinson et al. 1995). Therefore, Meffe states that “f ...
... Fragmentation has been considered as one of the most major factors that lead to the decline of many wildlife species (Brittingham and Temple 1983, Yahner 1988, Winslow et al. 2000) because fragmentation tends to decrease population productivity (Robinson et al. 1995). Therefore, Meffe states that “f ...
Australian Waterlife - Freshwater Microfauna
... common habitat sampled for aquatic micro-invertebrates; or their numbers are so low that they are regarded as unimportant. Aquatic vegetation and the benthos is routinely sampled for macro-invertebrates, however the chydorids are ignored as by-catch, or excluded due to the mesh size of the net (500u ...
... common habitat sampled for aquatic micro-invertebrates; or their numbers are so low that they are regarded as unimportant. Aquatic vegetation and the benthos is routinely sampled for macro-invertebrates, however the chydorids are ignored as by-catch, or excluded due to the mesh size of the net (500u ...
Uganda - Birds - Tropical Biology Association
... Camaroptera (Camaroptera brachyura) were estimated in regenerating and lightly logged forest edges. The line transect method was used with each transect measuring approximately 1.6 km long and 30 m wide. The different vegetation structures along each transect was surveyed and the percentage cover of ...
... Camaroptera (Camaroptera brachyura) were estimated in regenerating and lightly logged forest edges. The line transect method was used with each transect measuring approximately 1.6 km long and 30 m wide. The different vegetation structures along each transect was surveyed and the percentage cover of ...
Sarah Goodspeed Alien Invaders The problems with invasive
... The introduced European green crab Carcinus maenas has colonized nearly the entire globe, including the cold waters of the northwestern Atlantic along the New England coast. Population expansion of the northern limit coincides with temperature changes, yet the southern limit remains stable and more ...
... The introduced European green crab Carcinus maenas has colonized nearly the entire globe, including the cold waters of the northwestern Atlantic along the New England coast. Population expansion of the northern limit coincides with temperature changes, yet the southern limit remains stable and more ...
Powerpoint - Michigan State University
... competing for the same light and resources but it could be an advantage if one tree drew beneficial insects I guess.” “because as life evolves so did the trees. They became different types of trees that all can adapt to life here.” (interview) “trees eventually have to die off. I mean everything doe ...
... competing for the same light and resources but it could be an advantage if one tree drew beneficial insects I guess.” “because as life evolves so did the trees. They became different types of trees that all can adapt to life here.” (interview) “trees eventually have to die off. I mean everything doe ...
Population Dynamics of Exotic Insects
... depots. While there was little unanimity about it, the general consensus seems to have been that it had little significance, or if it had, it would be virtually impossible to detect in natural environments. The concept was therefore considered by many to be less than helpful to the understanding of ...
... depots. While there was little unanimity about it, the general consensus seems to have been that it had little significance, or if it had, it would be virtually impossible to detect in natural environments. The concept was therefore considered by many to be less than helpful to the understanding of ...
File - Mr. Shanks` Class
... A few animals infected with tuberculosis are accidentally introduced into the Canadian wood bison herd in northern Alberta. Arsenic leaks from a mine and enters a river where crayfish live. A pack of 15 wolves move across the border from Canada into a very large Montana park where they find adequate ...
... A few animals infected with tuberculosis are accidentally introduced into the Canadian wood bison herd in northern Alberta. Arsenic leaks from a mine and enters a river where crayfish live. A pack of 15 wolves move across the border from Canada into a very large Montana park where they find adequate ...
Extinctions and threat in the sea
... that a large number are threatened, primarily by exploitation and habitat loss or degradation. Evidence for poor detection of marine extinctions is consistent with the hypothesis that the number of marine extinctions is underestimated. Reducing fishing effort would reduce extinction risk in the sea. ...
... that a large number are threatened, primarily by exploitation and habitat loss or degradation. Evidence for poor detection of marine extinctions is consistent with the hypothesis that the number of marine extinctions is underestimated. Reducing fishing effort would reduce extinction risk in the sea. ...
How ACA and Indigenous Communities are Protecting Morpho
... With a wingspan of almost eight inches, blue Morpho butterflies are some of the largest in the world. Unfortunately, these butterflies, known for the vivid blue color of their wings, are threatened by habitat destruction and unsustainable collection and are on the verge of being classified as an end ...
... With a wingspan of almost eight inches, blue Morpho butterflies are some of the largest in the world. Unfortunately, these butterflies, known for the vivid blue color of their wings, are threatened by habitat destruction and unsustainable collection and are on the verge of being classified as an end ...
It`s a jungle out there - Humboldt State University
... shorter than previously. Those may not be ideal places, but the benefit of reduced competition is worth the cost in suboptimal grass height. In short, intraspecific competition broadens a species' niche. c. Now lets say foxes arrive in the area. They eat mice too, but also lizards and even grasshopp ...
... shorter than previously. Those may not be ideal places, but the benefit of reduced competition is worth the cost in suboptimal grass height. In short, intraspecific competition broadens a species' niche. c. Now lets say foxes arrive in the area. They eat mice too, but also lizards and even grasshopp ...
Population
... Three Big Ideas 1. Certain interactions among species affect their use of resources and their population sizes. 2. There are always limits to population growth in nature. 3. Changes in environmental conditions cause communities and ecosystems to gradually alter their species composition and populat ...
... Three Big Ideas 1. Certain interactions among species affect their use of resources and their population sizes. 2. There are always limits to population growth in nature. 3. Changes in environmental conditions cause communities and ecosystems to gradually alter their species composition and populat ...
Populations powerpoint new
... individual events may be magnified to such an extent that complex systems become quite unpredictable (‘Butterfly Effect’) Chaos is normal! ...
... individual events may be magnified to such an extent that complex systems become quite unpredictable (‘Butterfly Effect’) Chaos is normal! ...
Endangered species
... • Many believe only humans have intrinsic value • no reason to preserve “insignificant” species ...
... • Many believe only humans have intrinsic value • no reason to preserve “insignificant” species ...
Ecology
... A parasitic plant is one that derives some or all of its sustenance from another plant. Parasitic plants have a modified root (haustorium) that penetrates the host plant and connects to the xylem, phloem, or both. Animal parasites are generally much smaller than their host; both are special cases of ...
... A parasitic plant is one that derives some or all of its sustenance from another plant. Parasitic plants have a modified root (haustorium) that penetrates the host plant and connects to the xylem, phloem, or both. Animal parasites are generally much smaller than their host; both are special cases of ...
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.