Filters: Tags: Submersed Aquatic Vegetation (X) > partyWithName: Deanne C Drake (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Upper Midwest Environmental Sciences Center U.S. Geological Survey - ScienceBase Benjamin A Schlifer Ecosystems Brian R Gray Eric M Lund Kyle Bales Categories Data (2) Tag Types Theme (2) Place (2) Harvest Set (2) Tag Schemes None (2) ISO 19115 Topic Category (2) View Results as: JSON ATOM CSV

Evaluation of a Trace Plant Density Score in Long Term Resource Monitoring (LTRM) Vegetation Monitoring Data The Long Term Resource Monitoring (LTRM) program employs a destructive harvest method for sampling aquatic vegetation whereby a rake is dragged ~1.5 m over the substrate and plant materials are retrieved. The density of each species of submersed aquatic vegetation (SAV), and of all species combined, are scored based on the amount of plant material collected on the teeth of each rake. Plant density (PD) scores are ordered and vary from 0 (no plants captured) to 5 (80-100% of rake teeth covered). The PD score of 1 has represented the vast majority of all non-zero values since 1998 and is associated with a wide range of biomass (e.g. <1g to 694g fresh weight in Pools 4 and 8 during the 2017 field season). However,... Categories: Data; Tags: Biomass, Plant Density, Pool 13, Pool 4, Pool 8, All tags... Submersed Aquatic Vegetation, USGS Science Data Catalog (SDC), Upper Mississippi River, biota, Fewer tags Developing Methods Estimating Submersed Aquatic Vegetation Biomass in the Upper Mississippi River data Estimation of submersed aquatic vegetation (SAV) biomass was evaluated using field data collected in 2017, and targeted analyses of three existing data sets: 1) Yin and Kreiling (2001), Drake et al. (2016), and 3) LTRM vegetation data (1998 – 2017). Two field studies were completed in 2017. The first targeted SAV biomass in raked plots and was conducted in collaboration with USFWS annual Lake Onalaska Vallisneria americana monitoring. In the second study, fresh weights of raked SAV were recorded at approximately 10% of LTRM Pools 4 and 8 2017 sampling sites. Categories: Data; Tags: Biomass, Mississippi River, Mississippi River, Submersed Aquatic Vegetation, USGS Science Data Catalog (SDC), All tags... Upper Mississippi River, Vegetation, biota, Fewer tags