MANN, K. H. Production and use of detritus in various freshwater
... short period of microbial colonization renders it highly nutritious. As a result, a high proportion of the algal carbon originally produced passes into animals via detrital food webs, while a low proportion of vascular plant carbon does so. Much more of the latter simply supports microbial respirati ...
... short period of microbial colonization renders it highly nutritious. As a result, a high proportion of the algal carbon originally produced passes into animals via detrital food webs, while a low proportion of vascular plant carbon does so. Much more of the latter simply supports microbial respirati ...
GEO/OC 103 Exploring the Deep… Lab 7
... Seafood makes up percent of the world’s food supply, with over one billion people depending on its resources for survival. As seafood harvests have increased over the past two centuries, populations of some species of marine life have decreased and even become extinct. Given the ocean’s vast area ...
... Seafood makes up percent of the world’s food supply, with over one billion people depending on its resources for survival. As seafood harvests have increased over the past two centuries, populations of some species of marine life have decreased and even become extinct. Given the ocean’s vast area ...
EPOC 2014 program - Eastern Pacific Ocean Conference
... Vulnerability and adaptation strategies of pteropods in the California Current Ecosystem The ocean uptake of anthropogenic CO2 has shoaled the aragonite saturation horizon in the California Current Ecosystem, but only a few studies to date have demonstrated widespread biological impacts of ocean aci ...
... Vulnerability and adaptation strategies of pteropods in the California Current Ecosystem The ocean uptake of anthropogenic CO2 has shoaled the aragonite saturation horizon in the California Current Ecosystem, but only a few studies to date have demonstrated widespread biological impacts of ocean aci ...
Short-term changes of protozoan control on autotrophic
... cocktail (BeckmanT") were added. After 5-6 h, the samples were measured twice for 10 min for each sample in a liquid scintillation counter (Beckman'" LS 6000 IC). The number of newly produced bacterial cells was estimated from thymidine uptake using a conversion factor of 2 x 10'" cells mol"' thymid ...
... cocktail (BeckmanT") were added. After 5-6 h, the samples were measured twice for 10 min for each sample in a liquid scintillation counter (Beckman'" LS 6000 IC). The number of newly produced bacterial cells was estimated from thymidine uptake using a conversion factor of 2 x 10'" cells mol"' thymid ...
Project description of University of Basel
... organic C, soil respiration and microbial biomass. Elevated CO2 did not stimulate root growth of the treated vegetation nor did altered root decomposition occur. However, elevated CO2 resulted in 20% more water extractable soil organic carbon and marginally higher soil respiration rates. Our data sh ...
... organic C, soil respiration and microbial biomass. Elevated CO2 did not stimulate root growth of the treated vegetation nor did altered root decomposition occur. However, elevated CO2 resulted in 20% more water extractable soil organic carbon and marginally higher soil respiration rates. Our data sh ...
Inorganic Carbon-Assimilating Microbial Communities in the Pacific
... Betaproteobacteria, Verrucomicrobia, Actinobacteria, and Planctomycetes involved in DICassimilation obtained from 16S rRNA gene clone libraries of 13C fractions from SIP experiments conducted at NH-10, CR-20, and LP-6 in May 2010. ................................................................ 56 F ...
... Betaproteobacteria, Verrucomicrobia, Actinobacteria, and Planctomycetes involved in DICassimilation obtained from 16S rRNA gene clone libraries of 13C fractions from SIP experiments conducted at NH-10, CR-20, and LP-6 in May 2010. ................................................................ 56 F ...
Environmental issues of fish farming in offshore
... which are tolerant to organic pollution, shelf fauna are adapted to low food conditions, oxic or oxidized sediments and are most likely less tolerant to organic enrichment (Lee et al. 2006, Kutti et al. 2007b). Such a benthic community may rapidly be wiped out by organic inputs from farms, with limi ...
... which are tolerant to organic pollution, shelf fauna are adapted to low food conditions, oxic or oxidized sediments and are most likely less tolerant to organic enrichment (Lee et al. 2006, Kutti et al. 2007b). Such a benthic community may rapidly be wiped out by organic inputs from farms, with limi ...
Wave energy converters, sediment transport and coastal erosion
... Waves approaching a shore with an angle of impact other than perpendicular create a longshore current which, depending on the velocity of this current, removes sediment and thus potentially reduces the sediment available to form a beach in the affected region. The same is valid for perpendicular wav ...
... Waves approaching a shore with an angle of impact other than perpendicular create a longshore current which, depending on the velocity of this current, removes sediment and thus potentially reduces the sediment available to form a beach in the affected region. The same is valid for perpendicular wav ...
Executive summary of the updated synthesis of the impacts of
... ACIDIFICATION ON MARINE BIODIVERSITY ...
... ACIDIFICATION ON MARINE BIODIVERSITY ...
Conservation on the High Seas – drift algae habitat as an open
... documented as regularly undergoing this transformation into pelagic habitat (e.g. Hirosaki 1960, Kingsford and Choat 1985). However, one genus of brown algae – Sargassum – has taken this role to the next step. In the Atlantic, two species of Sargassum, S. natans and S. fluitans, have become holopela ...
... documented as regularly undergoing this transformation into pelagic habitat (e.g. Hirosaki 1960, Kingsford and Choat 1985). However, one genus of brown algae – Sargassum – has taken this role to the next step. In the Atlantic, two species of Sargassum, S. natans and S. fluitans, have become holopela ...
Modeling Biogeochemical Processes in Marine Ecosystems
... the water column. (see Marine biogeochemical cycles: effects on climate and response to climate change). All the biogeochemical processes and interactions between living and non-living components of the ecosystems cannot possibly be explored through observations alone. The satellite-based observatio ...
... the water column. (see Marine biogeochemical cycles: effects on climate and response to climate change). All the biogeochemical processes and interactions between living and non-living components of the ecosystems cannot possibly be explored through observations alone. The satellite-based observatio ...
Growth and carbon accumulation in root systems of Pinus
... exudation of organic compounds (Zak et al. 1993). Each of these responses will cause increased delivery of reduced carbon to the soil, which will in turn affect soil microbial communities, decomposition rates, nutrient availability and carbon storage in soils (Curtis et al. 1994). Proportionately gr ...
... exudation of organic compounds (Zak et al. 1993). Each of these responses will cause increased delivery of reduced carbon to the soil, which will in turn affect soil microbial communities, decomposition rates, nutrient availability and carbon storage in soils (Curtis et al. 1994). Proportionately gr ...
1. Which of the following is an example of an abiotic factor? A. the
... 51. Genetic variation among individuals of the same species enables some of these individuals to have a greater chance of obtaining resources and therefore, producing more offspring. True ...
... 51. Genetic variation among individuals of the same species enables some of these individuals to have a greater chance of obtaining resources and therefore, producing more offspring. True ...
Full-Text PDF
... generally considered as the first step limiting the transformation of both dissolved and particulate organic matter [1,6,7]. Through the decomposition process, microorganisms regulate nutrient (nitrogen and phosphorus) regeneration and carbon cycling that take place along the microbial loop [2,10]. ...
... generally considered as the first step limiting the transformation of both dissolved and particulate organic matter [1,6,7]. Through the decomposition process, microorganisms regulate nutrient (nitrogen and phosphorus) regeneration and carbon cycling that take place along the microbial loop [2,10]. ...
Bottom-Up and Top-Down Interactions across Aquatic
... conditions dependent on a rhythm set by the tides. In this chapter, we focus on rocky intertidal and salt marsh ecosystems, which have been extensively studied on many continents. Both rocky shore and salt marsh communities exhibit strong and consistent patterns of intertidal zonation over relativel ...
... conditions dependent on a rhythm set by the tides. In this chapter, we focus on rocky intertidal and salt marsh ecosystems, which have been extensively studied on many continents. Both rocky shore and salt marsh communities exhibit strong and consistent patterns of intertidal zonation over relativel ...
How does the resuspension of the biofilm alter the functioning of the
... order to determine the effect of resuspension of benthic organisms on the pelagic food web sensu largo (i.e. including virus). These refinements were incorporated in the framework of a trophic-flow model to better unravel the impact of the biofilm resuspension on the food web functioning by deciphering ...
... order to determine the effect of resuspension of benthic organisms on the pelagic food web sensu largo (i.e. including virus). These refinements were incorporated in the framework of a trophic-flow model to better unravel the impact of the biofilm resuspension on the food web functioning by deciphering ...
Sample pages 2 PDF
... Moreover, the distribution of bio-essential elements in early sea, is not easy to be studied, but inferences can be drawn from the characteristics of rocks formed from seafloor sediments. The best example is the abundance of iron in the geologic record (Isley and Abbott 1999), massive deposits of ir ...
... Moreover, the distribution of bio-essential elements in early sea, is not easy to be studied, but inferences can be drawn from the characteristics of rocks formed from seafloor sediments. The best example is the abundance of iron in the geologic record (Isley and Abbott 1999), massive deposits of ir ...
Deep-Sea Ecosystems: Pristine Biodiversity Reservoir and
... the continental slope, between 3,000 and 6,000 m depth. Abyssal plains are covered by a thick layer of fine sediment that can reach thousands of metres in thickness, resulting in the popular picture of a flat, monotonous deep-sea bed. The main characteristics of water masses at abyssal plains are: l ...
... the continental slope, between 3,000 and 6,000 m depth. Abyssal plains are covered by a thick layer of fine sediment that can reach thousands of metres in thickness, resulting in the popular picture of a flat, monotonous deep-sea bed. The main characteristics of water masses at abyssal plains are: l ...
Ocean Zones Ch14 - Stephanie Dietterle Webpage
... fish and shellfish. They also serve as valuable feeding and resting areas for birds and land animals – Chesapeake Bay, Monterey Bay ...
... fish and shellfish. They also serve as valuable feeding and resting areas for birds and land animals – Chesapeake Bay, Monterey Bay ...
Vertical nitrate fluxes in the Arctic Ocean
... of the ocean called the euphotic zone. Organic matter has a tendency to sink and thus exports essential nutrients to depth. This flux is called export production. In this way, the world ocean is partitioned into a photic, nutrient poor surface layer and the aphotic, nutrient rich deeper layers. With ...
... of the ocean called the euphotic zone. Organic matter has a tendency to sink and thus exports essential nutrients to depth. This flux is called export production. In this way, the world ocean is partitioned into a photic, nutrient poor surface layer and the aphotic, nutrient rich deeper layers. With ...
Comparing aquatic and terrestrial grazing ecosystems: is the grass
... (Carpenter 1986). Wave motion and currents would make it unlikely that herbivores could fertilize most benthic primary producers directly via their excretions. Yet, herbivores may indirectly fertilize benthic primary producers as the short primary producer canopy created by grazing ...
... (Carpenter 1986). Wave motion and currents would make it unlikely that herbivores could fertilize most benthic primary producers directly via their excretions. Yet, herbivores may indirectly fertilize benthic primary producers as the short primary producer canopy created by grazing ...
Herbivores, the Functional Diversity of Plants
... How herbivores alter ecosystem processes such as nutrient cycling and energy flow has been the subject of much research over the past several decades. Most of this research stems from the seminal paper by Hairston et al. (1960), which divided the world into homogeneous trophic levels (decomposers, p ...
... How herbivores alter ecosystem processes such as nutrient cycling and energy flow has been the subject of much research over the past several decades. Most of this research stems from the seminal paper by Hairston et al. (1960), which divided the world into homogeneous trophic levels (decomposers, p ...
GEF4400 “The Earth System”
... Why do we care about the Oceans influence on climate? • Storing and transporting large amounts of heat, freshwater, and carbon; exchanging these properties with the atmosphere. • ~93% of the excess heat energy stored in the ocean over last 50 yrs; • >3/4 of total exchange of water (evaporation, prec ...
... Why do we care about the Oceans influence on climate? • Storing and transporting large amounts of heat, freshwater, and carbon; exchanging these properties with the atmosphere. • ~93% of the excess heat energy stored in the ocean over last 50 yrs; • >3/4 of total exchange of water (evaporation, prec ...
Radiocarbon dating of late Quaternary sediments: reservoir
... It is now well known that radiocarbon dating of marine shell samples or marine mammal residue is skewed by the reservoir effect of the oceans. As a result, in most regions marine samples yield radiocarbon ages substantially older than those yielded by terrestrial samples. The 14C ages of marine foss ...
... It is now well known that radiocarbon dating of marine shell samples or marine mammal residue is skewed by the reservoir effect of the oceans. As a result, in most regions marine samples yield radiocarbon ages substantially older than those yielded by terrestrial samples. The 14C ages of marine foss ...
Chapter 36 F Open Ocean Deep Sea
... Chapter 34; CoML, 2010; Grassle and Maciolek, 1992), although the true number of species may be less, (Appeltans et al., 2012, Costello et al., 2013; Mora et al., 2013a), it would take many generations to document deep-sea diversity in its entirety. In fact, this may not even be possible given the h ...
... Chapter 34; CoML, 2010; Grassle and Maciolek, 1992), although the true number of species may be less, (Appeltans et al., 2012, Costello et al., 2013; Mora et al., 2013a), it would take many generations to document deep-sea diversity in its entirety. In fact, this may not even be possible given the h ...