Maintenance of leaf N controls the photosynthetic CO of free-air CO
... glacial outwash comprised of loamy sand soils with low nutrient availability (Grigal et al., 1976). The mean annual precipitation is 660 mm yr!1 and the mean maximum July temperature is 28.3 1C. The BioCON FACE experiment consists of six circular plots of 20 m diameter, three of which control atmosp ...
... glacial outwash comprised of loamy sand soils with low nutrient availability (Grigal et al., 1976). The mean annual precipitation is 660 mm yr!1 and the mean maximum July temperature is 28.3 1C. The BioCON FACE experiment consists of six circular plots of 20 m diameter, three of which control atmosp ...
Srivastava and Bell 2009
... EVi ¼ b0 þ b1 detritivore variable(s) þ ei We first examined the effect of the number of detritivore species [i.e. detritivore variable(s) = detritivore richness] on each EV. We then examined the effect of detritivore identity and detritivore polycultures on each EV: detritivore variable(s) ¼ bT T þ ...
... EVi ¼ b0 þ b1 detritivore variable(s) þ ei We first examined the effect of the number of detritivore species [i.e. detritivore variable(s) = detritivore richness] on each EV. We then examined the effect of detritivore identity and detritivore polycultures on each EV: detritivore variable(s) ¼ bT T þ ...
Download Tech Report #129. Smith, C. W., J. Denslow, and S. Hight. Sept. 2002. Proceedings of a workshop on biological control of invasive plants in native Hawaiian ecosystems
... moreover, appear to be particularly vulnerable to invasive species. Over 900 nonindigenous plant species have become naturalized in Hawai'i, more than 90 of which constitute substantial problems for conservation because they compete with native species or so alter ecosystem processes that whole comm ...
... moreover, appear to be particularly vulnerable to invasive species. Over 900 nonindigenous plant species have become naturalized in Hawai'i, more than 90 of which constitute substantial problems for conservation because they compete with native species or so alter ecosystem processes that whole comm ...
[FSH] 1909.12 - USDA Forest Service
... The planning requirement at 36 CFR 219.6(a) describes the process requirements of the assessment for plan development and plan revision. The responsible official has the discretion to determine the scope, scale, and timing of an assessment described in § 219.5(a)(1), subject to the requirements of t ...
... The planning requirement at 36 CFR 219.6(a) describes the process requirements of the assessment for plan development and plan revision. The responsible official has the discretion to determine the scope, scale, and timing of an assessment described in § 219.5(a)(1), subject to the requirements of t ...
Community Abstract Mesic Prairie
... et al. 1986, Collins and Gibson 1990, Reich et al. 1990, Schmalzer and Hinkle 1992, Timmins 1992, Laubhan 1995, Warners 1997). While this discussion has focused on plants it is important to note that these species serve as host plants for a variety of insects and the structure of open grasslands is ...
... et al. 1986, Collins and Gibson 1990, Reich et al. 1990, Schmalzer and Hinkle 1992, Timmins 1992, Laubhan 1995, Warners 1997). While this discussion has focused on plants it is important to note that these species serve as host plants for a variety of insects and the structure of open grasslands is ...
Turbinaria ornata as an herbivory refuge for associate
... ornata has been recorded in islands in the north and south regions of the Tuamotu Archipelago (Montaggioni et al. 1985; Payri and Stiger 2001; Stiger and Payri 2005; Martinez et al. 2007) and in Mangareva in the Gambier Archipelago (H. L. Stewart, personal observation 2009). The abundance of Turbina ...
... ornata has been recorded in islands in the north and south regions of the Tuamotu Archipelago (Montaggioni et al. 1985; Payri and Stiger 2001; Stiger and Payri 2005; Martinez et al. 2007) and in Mangareva in the Gambier Archipelago (H. L. Stewart, personal observation 2009). The abundance of Turbina ...
Description: - Florida Natural Areas Inventory
... In addition to providing habitat for many rare species (listed above), mangrove swamps function as nursery grounds for many of Florida’s commercially and recreationally important fish and shellfish such as common snook (Centropomus undecimalis), shrimp, several species of grouper, and snapper (Thay ...
... In addition to providing habitat for many rare species (listed above), mangrove swamps function as nursery grounds for many of Florida’s commercially and recreationally important fish and shellfish such as common snook (Centropomus undecimalis), shrimp, several species of grouper, and snapper (Thay ...
Aquatic Species at Risk in the Thames River Watershed, Ontario
... The Thames River originates northeast of London, Ontario and flows 273 km through the agricultural heartland of southwestern Ontario to Lake St. Clair which drains into Lake Erie (Figure 1). The river drains 5,285 square kilometers of land which makes it the second largest watershed in southwestern ...
... The Thames River originates northeast of London, Ontario and flows 273 km through the agricultural heartland of southwestern Ontario to Lake St. Clair which drains into Lake Erie (Figure 1). The river drains 5,285 square kilometers of land which makes it the second largest watershed in southwestern ...
Volume 2, Chapter 4-2 - Digital Commons @ Michigan Tech
... Later, Anderson (1986) reported it from mosses and under bark in Ireland. Ribbon worms are clandestine species that one can rarely find in the open (Winsor 2001, pers. comm. 29 February 2012). Argonemertes dendyi (Figure 12) is among the small fauna, measuring only 15 mm (Dakin 1915). It has multipl ...
... Later, Anderson (1986) reported it from mosses and under bark in Ireland. Ribbon worms are clandestine species that one can rarely find in the open (Winsor 2001, pers. comm. 29 February 2012). Argonemertes dendyi (Figure 12) is among the small fauna, measuring only 15 mm (Dakin 1915). It has multipl ...
The dependence of root system properties on root system biomass... North American grassland species
... and the other 7 species had non-significant trends for increasing tissue density with increasing belowground biomass (average rate of increase = 0.00010 g root biomass cm−3 g−1 root biomass m−2 ). The average diameter of root systems decreased significantly (p<0.05) with increasing belowground bioma ...
... and the other 7 species had non-significant trends for increasing tissue density with increasing belowground biomass (average rate of increase = 0.00010 g root biomass cm−3 g−1 root biomass m−2 ). The average diameter of root systems decreased significantly (p<0.05) with increasing belowground bioma ...
1999, pp. 1955-1969 © 1999 by the Ecological Society of America
... sampling was designed so that measurements were taken to closely reflect leaf photosynthetic capacity in the field at ambient CO, concentration (Reich et al. 1991, Ellsworth and Reich 1992). We took at least 10 (but usually more) measurements per species from several individuals at each site, then a ...
... sampling was designed so that measurements were taken to closely reflect leaf photosynthetic capacity in the field at ambient CO, concentration (Reich et al. 1991, Ellsworth and Reich 1992). We took at least 10 (but usually more) measurements per species from several individuals at each site, then a ...
Acoustic profiling of the landscape
... This resulted in the discovery of two new katydid species and a novel sound producing structure in a carabid beetle, a species previously unknown to produce sound. Acoustic diversity across seasonal and elevational gradients increased with increasing temperatures. Climatic variability along the elev ...
... This resulted in the discovery of two new katydid species and a novel sound producing structure in a carabid beetle, a species previously unknown to produce sound. Acoustic diversity across seasonal and elevational gradients increased with increasing temperatures. Climatic variability along the elev ...
Carol A. Blanchette for the degree of Doctor of Philosophy... presented on August 29, 1994. Factors on Population
... Menge, who have been excellent mentors and have greatly enhanced my graduate school experience. Both Jane and Bruce provided constant encouragement, support and invaluable advice, yet always allowed me to think for myself. Bruce also provided me with lots of practical field experience at how to dril ...
... Menge, who have been excellent mentors and have greatly enhanced my graduate school experience. Both Jane and Bruce provided constant encouragement, support and invaluable advice, yet always allowed me to think for myself. Bruce also provided me with lots of practical field experience at how to dril ...
scale-dependent responses of plant biodiversity to nitrogen
... the biotic-homogenization hypothesis; Huston 1979, Tilman 1988, Wisheu and Keddy 1992). Second, the increase in productivity following nutrient enrichment may cause b diversity to increase because (1) the number of alternate community states is higher in more productive areas or (2) temporal stochas ...
... the biotic-homogenization hypothesis; Huston 1979, Tilman 1988, Wisheu and Keddy 1992). Second, the increase in productivity following nutrient enrichment may cause b diversity to increase because (1) the number of alternate community states is higher in more productive areas or (2) temporal stochas ...
Ecological Role of Dry-Habitat Chimpanzees (Pan troglodytes
... First and foremost, I would like to thank my advisory committee Kaye Reed, Leanne Nash, and Gary Schwartz for their patience, support, and guidance throughout my entire graduate career. I am especially grateful to my chair, Kaye Reed, for the immediate responses to late night emails, long-distance s ...
... First and foremost, I would like to thank my advisory committee Kaye Reed, Leanne Nash, and Gary Schwartz for their patience, support, and guidance throughout my entire graduate career. I am especially grateful to my chair, Kaye Reed, for the immediate responses to late night emails, long-distance s ...
CO # 21: Ensure that structural habitat provided by corals on the
... photodegradation of some synthetic materials, but on the sea bottom, protected from UV radiation, there is no evidence that these nets weaken or degrade over time and as a result, lost gear can continue to fish for decades. Gillnets, traps, trawls and line fisheries are considered the most harmful i ...
... photodegradation of some synthetic materials, but on the sea bottom, protected from UV radiation, there is no evidence that these nets weaken or degrade over time and as a result, lost gear can continue to fish for decades. Gillnets, traps, trawls and line fisheries are considered the most harmful i ...
effects of interspecific competition and multiple predators
... situations to meet its energy requirements. Of course, in these conditions the animal tries to forage as efficiently as possible also during the short periods of lower risk between long periods of high risk. Thus foraging effort in both high and low risk situations should increase with an increase o ...
... situations to meet its energy requirements. Of course, in these conditions the animal tries to forage as efficiently as possible also during the short periods of lower risk between long periods of high risk. Thus foraging effort in both high and low risk situations should increase with an increase o ...
Mammalian Predators of the Larch Sawfly in Eastern Manitoba```
... common and widespread insectivore of the Canadian boreal forest. It has been taken in low to moderate numbers on all plots studied and reached its highest populations in relatively dense stands with wet floors (Buckner, 1957b). This species has been observed feeding upon larch sawfly cocoons in obse ...
... common and widespread insectivore of the Canadian boreal forest. It has been taken in low to moderate numbers on all plots studied and reached its highest populations in relatively dense stands with wet floors (Buckner, 1957b). This species has been observed feeding upon larch sawfly cocoons in obse ...
Herbivore and predator diversity interactively affect ecosystem
... predator richness! contrast compared treatments with monocultures at both trophic levels to the treatment with polycultures at both trophic levels (e.g. Fontaine et al. 2006). The "grazer richness * predator richness! contrast assessed whether grazer richness effects were altered by predator richnes ...
... predator richness! contrast compared treatments with monocultures at both trophic levels to the treatment with polycultures at both trophic levels (e.g. Fontaine et al. 2006). The "grazer richness * predator richness! contrast assessed whether grazer richness effects were altered by predator richnes ...
Fungal endophytes limit pathogen damage in a tropical tree
... (BCI) and in an abandoned plot under secondary forest at PNS (the closest site to BCI; MH ⫽ 0.928, JI ⫽ 0.458). These sites also share the most complex overstory and are similar in terms of rainfall regime. Relatively high values also were found for comparisons between BCI and a recently abandoned p ...
... (BCI) and in an abandoned plot under secondary forest at PNS (the closest site to BCI; MH ⫽ 0.928, JI ⫽ 0.458). These sites also share the most complex overstory and are similar in terms of rainfall regime. Relatively high values also were found for comparisons between BCI and a recently abandoned p ...
Spatial Dynamics in the Growth and Spread of Halimeda and
... striking rocks light up can burn yet also give warmth blazing through the night ...
... striking rocks light up can burn yet also give warmth blazing through the night ...
conservation action plan for the russian far east ecoregion complex
... region's natural biodiversity. The funda- ...
... region's natural biodiversity. The funda- ...
Hibernation.
... mountain peaks of the Australian alps where it hibernates under snow-covered boulder fields for ~5–6 months. The possum adopts the typical ballshape of many torpid hibernators, but it has been turned on its back to show head and appendages. The tawny frogmouth (Podargus strigoides, 500 g; top-middle ...
... mountain peaks of the Australian alps where it hibernates under snow-covered boulder fields for ~5–6 months. The possum adopts the typical ballshape of many torpid hibernators, but it has been turned on its back to show head and appendages. The tawny frogmouth (Podargus strigoides, 500 g; top-middle ...
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.