Invasive weeds in rangelands: Species, impacts, and management
... these plant communities (Callihan and Evans 1991). In many cases, these broadleaf species produce an extensive taproot system that can extract more moisture from deep within the soil profile. Thus, they remain green longer into the dry season than do the annual grasses. In addition, these invasive b ...
... these plant communities (Callihan and Evans 1991). In many cases, these broadleaf species produce an extensive taproot system that can extract more moisture from deep within the soil profile. Thus, they remain green longer into the dry season than do the annual grasses. In addition, these invasive b ...
doc - ChinCare.com
... After a decade of studying wild chinchillas, I still have really not seen one. Their natural history makes these little mammals hard for researchers to observe. They are nocturnal, perhaps to escape some predation pressures or to avoid the heat of the hot arid days here in these cacti- covered trans ...
... After a decade of studying wild chinchillas, I still have really not seen one. Their natural history makes these little mammals hard for researchers to observe. They are nocturnal, perhaps to escape some predation pressures or to avoid the heat of the hot arid days here in these cacti- covered trans ...
Marine Science Training Handbook
... 23,000 square kilometres, but for its size boasts a wide biodiversity and cross section of habitats. The population is also small at only 300,000 people. However, largely due to immigration, the population is rapidly expanding and with the majority of population centres being on the coast, fast deve ...
... 23,000 square kilometres, but for its size boasts a wide biodiversity and cross section of habitats. The population is also small at only 300,000 people. However, largely due to immigration, the population is rapidly expanding and with the majority of population centres being on the coast, fast deve ...
Molluscan Studies - Oxford Academic
... Scintilla sp. was found every year except 2013, and Teinostoma sp. was found only in 2013. In our survey, these symbionts were never found outside the burrows in a free-living state or inside the burrows of other, sympatric invertebrates (e.g. Neaxius sp., Ochetostoma sp. and Sipunculus nudus Linnae ...
... Scintilla sp. was found every year except 2013, and Teinostoma sp. was found only in 2013. In our survey, these symbionts were never found outside the burrows in a free-living state or inside the burrows of other, sympatric invertebrates (e.g. Neaxius sp., Ochetostoma sp. and Sipunculus nudus Linnae ...
Environmental and geographic factors driving dung beetle
... Ochi et al. (2009) identified nine new species and two new subspecies of Onthophagus in a combined study of dung beetles in Peninsular Malaysia, Borneo, and Sumatra, but they did not make a concerted effort to describe overall dung beetle diversity in Peninsular Malaysia. In an attempt to analyse ch ...
... Ochi et al. (2009) identified nine new species and two new subspecies of Onthophagus in a combined study of dung beetles in Peninsular Malaysia, Borneo, and Sumatra, but they did not make a concerted effort to describe overall dung beetle diversity in Peninsular Malaysia. In an attempt to analyse ch ...
Choosing appropriate temporal and spatial scales for ecological
... upper midwest is an abnormal and external event. But at a spatial scale of 100,000 hectares and a temporal scale of 200 years, fire in such a forest is “incorporated”. With the shift in ecology from the balance-of-nature to the flux-of-nature paradigm, we have added disturbance regimes to energy flo ...
... upper midwest is an abnormal and external event. But at a spatial scale of 100,000 hectares and a temporal scale of 200 years, fire in such a forest is “incorporated”. With the shift in ecology from the balance-of-nature to the flux-of-nature paradigm, we have added disturbance regimes to energy flo ...
colorado fourteeners initiative 2007 rare plant
... are circumboreal, being common in the arctic regions and reaching their southernmost distribution in the alpine of Colorado. Others are disjunct, known from small populations separated by hundreds of miles from main populations to the north. Finally, Colorado is also home to several endemic alpine s ...
... are circumboreal, being common in the arctic regions and reaching their southernmost distribution in the alpine of Colorado. Others are disjunct, known from small populations separated by hundreds of miles from main populations to the north. Finally, Colorado is also home to several endemic alpine s ...
What is a Katydid?
... (instars) look like miniature versions of adults, and do not acquire reproductive ability or wings until the final molt (Capinera et al. 2004). In some species the instars do not resemble the adults, but mimic other species such as spiders or flowers in order to deter predation. Leaf Mimicry: Resear ...
... (instars) look like miniature versions of adults, and do not acquire reproductive ability or wings until the final molt (Capinera et al. 2004). In some species the instars do not resemble the adults, but mimic other species such as spiders or flowers in order to deter predation. Leaf Mimicry: Resear ...
A Five Year Species Action Framework: making a difference for
... which species should be the focus of species management efforts? - the ‘Species Action List’ Drawing up a Species Action List The ‘Species Action List’ on pages 11-13 identifies species for which clear, targeted action would currently be most helpful. Further information on these animals, plants and ...
... which species should be the focus of species management efforts? - the ‘Species Action List’ Drawing up a Species Action List The ‘Species Action List’ on pages 11-13 identifies species for which clear, targeted action would currently be most helpful. Further information on these animals, plants and ...
New England Cottontail - Environmental Defense Fund
... and are reluctant to travel farther than 16 feet from cover, even for food. When it is available, they much prefer understory habitat with a density of 20,000 woody stems per acre, which is equal to about 46 stems in a 10 x 10 foot square area (only counting plants over 20 inches tall with a diamete ...
... and are reluctant to travel farther than 16 feet from cover, even for food. When it is available, they much prefer understory habitat with a density of 20,000 woody stems per acre, which is equal to about 46 stems in a 10 x 10 foot square area (only counting plants over 20 inches tall with a diamete ...
The adaptive value of migrations for the bivalve Macoma balthica
... because they have to leave their burrow and become available for pelagic predators such as fish, which they normally do not encounter, and they run the risk to end up in unsuitable habitats. Therefore, the change of habitat must offer major advantages to the migrant. A common life-history feature of ...
... because they have to leave their burrow and become available for pelagic predators such as fish, which they normally do not encounter, and they run the risk to end up in unsuitable habitats. Therefore, the change of habitat must offer major advantages to the migrant. A common life-history feature of ...
Sonoran Desert Phenology Calendar
... Insect populations are also attuned to the rhythms of climate. Population dynamics are often controlled by climate variables like temperature, which restricts survival and precipitation, which restricts reproduction for species whose young rely on standing water. Insects are also important members o ...
... Insect populations are also attuned to the rhythms of climate. Population dynamics are often controlled by climate variables like temperature, which restricts survival and precipitation, which restricts reproduction for species whose young rely on standing water. Insects are also important members o ...
A meta-analysis of biotic resistance to exotic plant invasions
... biotic resistance on early life stages of the invader, meaning the invader was added as seed or transplanted seedlings or small cuttings. The resident community could not be assembled in a greenhouse, except for studies of soil fungal effects. The community was typically entirely native, and in some ...
... biotic resistance on early life stages of the invader, meaning the invader was added as seed or transplanted seedlings or small cuttings. The resident community could not be assembled in a greenhouse, except for studies of soil fungal effects. The community was typically entirely native, and in some ...
Community secondary production as a measure of ecosystem
... blockage), and fragmented-downstream (FD, those on the ocean-side of a major flow blockage). Fragmentation categories for each surveyed creek are provided in Table 2. Survey Methodology.—All production data were derived from field estimates of fish densities and lengths from surveys in May 2005. At ...
... blockage), and fragmented-downstream (FD, those on the ocean-side of a major flow blockage). Fragmentation categories for each surveyed creek are provided in Table 2. Survey Methodology.—All production data were derived from field estimates of fish densities and lengths from surveys in May 2005. At ...
DEVELOPING THE COST OF LARGE CARNIVORE CONFLICT
... famers who looked upon carnivores as having an ecological role on the farms were less likely to want all carnivores removed, carte blanch, (Schumann et al, 2012). This in of itself provides a wonderful educational opportunity as it is well documented that without top predators controlling the popula ...
... famers who looked upon carnivores as having an ecological role on the farms were less likely to want all carnivores removed, carte blanch, (Schumann et al, 2012). This in of itself provides a wonderful educational opportunity as it is well documented that without top predators controlling the popula ...
Final Report - The Rufford Foundation
... were made. Observations on the Middle-altitude Troop were made during a different season than those of the Village Troop and the High-altitude Troop. Time spent moving was comparable across all three troops (10-20%) although it was not a major activity of the central Himalayan langur. The troops pos ...
... were made. Observations on the Middle-altitude Troop were made during a different season than those of the Village Troop and the High-altitude Troop. Time spent moving was comparable across all three troops (10-20%) although it was not a major activity of the central Himalayan langur. The troops pos ...
MACRO-INVERTEBRATE FUNCTIONAL GROUPS IN
... remain a poor indicator of potential species effects, as demonstrated by Steneck (2001) who stated: “Species that are closely related evolutionarily are not necessarily morphologically or functionally similar.” This observation is particularly easy to demonstrate in the aquatic environment; therefor ...
... remain a poor indicator of potential species effects, as demonstrated by Steneck (2001) who stated: “Species that are closely related evolutionarily are not necessarily morphologically or functionally similar.” This observation is particularly easy to demonstrate in the aquatic environment; therefor ...
Evolutionary responses to environmental change: trophic
... system, the singular strategy ss plant thermal trait zP is always to match the temperature of the environment T (dashed line). For uncorrelated traits, thermal traits zP ¼ zH ¼ T for all values of plant thermal niche width wP (interaction traits sP and sH depend on initial conditions). For correlate ...
... system, the singular strategy ss plant thermal trait zP is always to match the temperature of the environment T (dashed line). For uncorrelated traits, thermal traits zP ¼ zH ¼ T for all values of plant thermal niche width wP (interaction traits sP and sH depend on initial conditions). For correlate ...
4.10 - City of Chowchilla
... Agricultural land with associated irrigation/drainage ditches/ponds is the primary land use within the Planning Area. The only natural biotic habitat of substantial size within the Planning Area is the riparian scrub and aquatic habitat associated with Ash and Berenda Sloughs. There may be small, is ...
... Agricultural land with associated irrigation/drainage ditches/ponds is the primary land use within the Planning Area. The only natural biotic habitat of substantial size within the Planning Area is the riparian scrub and aquatic habitat associated with Ash and Berenda Sloughs. There may be small, is ...
Imperio et al 2012_Oikos
... in Imperio et al. (2010). The ungulates Life history traits of the wild boar at Castelporziano are reported by Focardi et al. (2008). Wild boar is a mediumsized omnivore (at Castelporziano adult females attain 50–70 kg, and adult males 60–90 kg). Most births are observed between late April and late ...
... in Imperio et al. (2010). The ungulates Life history traits of the wild boar at Castelporziano are reported by Focardi et al. (2008). Wild boar is a mediumsized omnivore (at Castelporziano adult females attain 50–70 kg, and adult males 60–90 kg). Most births are observed between late April and late ...
Consequences of low mobility in spatially and temporally
... In dynamic landscapes, however, replicated trial runs always showed species frequency stabilizing well before 100 time-steps, demonstrating that 100 steps were a reliable basis for comparison of landscape and dispersal variables. Relative to frequency values at 100 steps, transient effects were mino ...
... In dynamic landscapes, however, replicated trial runs always showed species frequency stabilizing well before 100 time-steps, demonstrating that 100 steps were a reliable basis for comparison of landscape and dispersal variables. Relative to frequency values at 100 steps, transient effects were mino ...
November - Puget Sound Mycological Society
... the culture. In recent years, the harvest of the Japanese matsutake [Tricholoma matsutake (Ito et Imai) Sing.] has declined and so the American matsutake [Tricholoma magnivelare (Peck) Redhead] is imported to fill the gap. The chemicals that make up the exquisite taste of this mushroom have been the ...
... the culture. In recent years, the harvest of the Japanese matsutake [Tricholoma matsutake (Ito et Imai) Sing.] has declined and so the American matsutake [Tricholoma magnivelare (Peck) Redhead] is imported to fill the gap. The chemicals that make up the exquisite taste of this mushroom have been the ...
Invasive Earthworms
... It is the worms very ability to turn around organic matter so quickly that is both its best and worst quality. For agricultural purposes, quick turn around is an asset, but in natural ecosystems this is not a benefit. Many ecosystems have formed around organic matter that has built up over the year ...
... It is the worms very ability to turn around organic matter so quickly that is both its best and worst quality. For agricultural purposes, quick turn around is an asset, but in natural ecosystems this is not a benefit. Many ecosystems have formed around organic matter that has built up over the year ...
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.