scholarly journals How small-scale variation in oyster reef patchiness influences predation on bivalves

2011 ◽  
Vol 429 ◽  
pp. 87-91 ◽  
Author(s):  
PI Macreadie ◽  
NR Geraldi ◽  
CH Peterson
Keyword(s):  
Oyster Reef ◽  
Small Scale ◽  
Scale Variation

Small-scale variation in herbivore abundance and grazing on Juncus roemerianus dominated salt marshes

2020 ◽  
Vol 28 (6) ◽  
pp. 983-991
Author(s):  
Jessica Carrier ◽  
Eric L. Sparks ◽  
Mark S. Woodrey ◽  
Just Cebrian ◽  
Anne Boettcher
Keyword(s):  
Salt Marshes ◽  
Juncus Roemerianus ◽  
Small Scale ◽  
Scale Variation

SMALL SCALE PILOT PROJECT AS A TOOL FOR PLANNING LARGE SCALE RESTORATION

2008 ◽  
Vol 2008 (1) ◽  
pp. 1163-1169
Author(s):  
Leslie J. Craig ◽  
Tom Pride
Keyword(s):  
Large Scale ◽  
Oyster Reef ◽  
Pilot Project ◽  
Lessons Learned ◽  
Small Scale ◽  
Pilot Studies ◽  
Restoration Project ◽  
Survival And Growth ◽  
Oyster Restoration

ABSTRACT The use of pilot studies can be a useful tool in determining the most appropriate location, method and design for a large scale restoration project. This paper provides a case study where Trustees implemented a small pilot project and feasibility study to determine the best approach for a large scale oyster reef creation project. While the specific case study is the result of a CERCLA settlement (Alafia River Acid Spill of 1997), this model is transferable to other instances where Trustees are scoping for the most appropriate sites and methods to conduct settlement funded restoration. The Restoration Plan and Environmental Assessment on which the case settlement was based called for creation of approximately 4 acres of oyster reef in addition to 4 acres of estuarine marsh restoration. Through an initial scoping process, the Trustees determined that more information was needed to select the most appropriate locations and techniques to implement the large scale oyster restoration project. The Trustees identified 3 general locations with potential for larger scale oyster reef creation. A portion of settlement funding was used to contract for construction and monitoring of an oyster reef pilot project to examine the efficacy of oyster reef construction at the three locations using 4 different cultch materials. At each of the locations, 4 small reefs (approximately 75’ × 20’) were constructed and monitored for spat set, oyster survival and growth as well as subsidence. A baseline construction report and final monitoring report detailed the results. In addition, a separate report was completed that outlined the feasibility of constructing a 4 acre oyster reef in Hillsborough Bay, FL. This report included several construction considerations such as local sources and costs of cultch materials, shipping/transport, staging areas, construction equipment as well as potential local contractors. This paper reports the results of the oyster pilot project and feasibility report as well as lessons learned from each approach.

Population density and small-scale variation in habitat quality affect phenotypic quality in roe deer

Oecologia ◽  
2001 ◽  
Vol 128 (3) ◽  
pp. 400-405 ◽  
Author(s):  
Nathalie Pettorelli ◽  
Jean-Michel Gaillard ◽  
Patrick Duncan ◽  
Jean-Pierre Ouellet ◽  
Guy Van Laere
Keyword(s):  
Population Density ◽  
Habitat Quality ◽  
Roe Deer ◽  
Small Scale ◽  
Phenotypic Quality ◽  
Scale Variation

scholarly journals Spatial variation in heart failure and air pollution in Warwickshire, UK: an investigation of small scale variation at the ward level

The Lancet ◽  
2014 ◽  
Vol 384 ◽  
pp. S20
Author(s):  
Oscar Bennett ◽  
Ngianga-Bakwin Kandala ◽  
Chen Ji ◽  
John Linnane ◽  
Aileen Clarke
Keyword(s):  
Heart Failure ◽  
Air Pollution ◽  
Spatial Variation ◽  
Small Scale ◽  
Ward Level ◽  
Scale Variation

scholarly journals 210Po/210Pb Disequilibria in the Eastern Tropical North Pacific

2021 ◽  
Vol 8 ◽  
Author(s):  
Qiang Ma ◽  
Yusheng Qiu ◽  
Run Zhang ◽  
E Lv ◽  
Yipu Huang ◽  
...  
Keyword(s):  
Water Column ◽  
North Pacific ◽  
Biological Activities ◽  
Small Scale ◽  
Horizontal Transport ◽  
Activity Ratios ◽  
Scale Particle ◽  
Seawater Samples ◽  
Scale Variation

The 210Po/210Pb disequilibrium was attempted to reveal the small-scale particle dynamics in the eastern tropical North Pacific. Seawater samples in the full water column were collected from three sites in the Tehuantepec bowl near the East Pacific Ridge for determination of dissolved and particulate 210Po and 210Pb. Our results show that TPo/TPb activity ratios in the full water column at the three sites are less than 1, with an average of 0.56, indicating that the total 210Po in the oligotrophic sea is significantly deficient. The activity ratios of DPo/DPb in the dissolved phase are less than 1, while those in the particulate phase are greater than 1 (except for the bottom 300 m), indicating fractionation between 210Po and 210Pb in the scavenging process. A negative linear relationship between 210Po deficit and silicate proves that biological activities are responsible for 210Po deficiency in the upper 200 m. However, the deficit of 210Po in the bottom 300 m may be caused by the horizontal transport of the hydrothermal plume. After correcting the horizontal contribution, the removal rates of 210Po for the 200–1,500 m and the bottom 300 m layers increased by 7.5–21 and 26.1–29.5%, respectively. Correspondingly, the variation range of the residence time of a total 210Po became smaller. Our calculations suggest that horizontal transport is acting as a stabilizer for small-scale variation in the 210Po deficit in the eastern tropical North Pacific. Our study highlights the need to pay more attention to the small-scale variation of 210Po deficit when applying 210Po/210Pb disequilibria to trace biogeochemical processes, and the mechanism responsible for this variation deserves further study.

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