EPA - National Lakes Assessment - Zooplankton - 2007

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 17,498 records.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Versions

The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

U.S. Environmental Protection Agency (USEPA). 2009. National Lakes Assessment: A Collaborative Survey of the Nation’s Lakes. EPA 841-R-09-001. U.S. Environmental Protection Agency, Office of Water and Office of Research and Development, Washington, D.C.

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is United States Geological Survey. To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 111105f7-661d-416e-bb9d-9e291d5fdb1f.  United States Geological Survey publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF-US.

Keywords

Occurrence; assessment; zooplankton; Observation

Contacts

Geographic Coverage

geographic scope = 48.97903 to 26.93623 latitude; -67.6993 to -124.6325 longitude

Taxonomic Coverage

127 different taxa of zooplankton: Acari Chaoborus Keratella ##[4] Bosmina Chaoborus punctipennis Cyclopidae ##[7] Diaptomidae Lecanidae Lepadella ##[10] Ploesoma Polyarthra Synchaeta ##[13] Trichocerca Diaphanosoma Daphnia ambigua ##[16] Temoridae Anuraeopsis Brachionus angularis ##[19] Conochilidae Hexarthra Kellicottia bostoniensis ##[22] Keratella taurocephala Platyias Pompholyx ##[25] Notommata Asplanchna Brachionus caudatus ##[28] Brachionus havanaensis Filinia Gastropus ##[31] None present Ceriodaphnia Chydoridae ##[34] Chironomidae Daphnia mendotae Kellicottia longispina ##[37] Daphnia Polyphemus Daphnia catawba ##[40] Sida Calanoida Chaoborus flavicans ##[43] Holopedium gibberum Collotheca Rotifera ##[46] Daphnia parvula Keratella hiemalis Leptodora ##[49] Moina Euchlanis Daphnia retrocurva ##[52] Eubosmina Dreissena bugensis Dreissena polymorpha ##[55] Testudinella Ergasilus Bdelloidea ##[58] Mytilina Brachionus calyciflorus Brachionus quadridentatus ##[61] Brachionus forficula Keratella testudo Hesperodiaptomus ##[64] Brachionus urceolaris Keratella quadrata Notholca ##[67] Daphnia lumholtzi Tylotrocha Chaoborus albipes ##[70] Centropagidae Cercopagis Unionicola ##[73] Holopedium amazonicum Brachionus bidentata Ascomorpha ##[76] Daphnia laevis Collothecidae Daphnia longiremis ##[79] Aglaodiaptomus Encentrum Colurella ##[82] Ceratopogonidae Brachionus Ptygura ##[85] Brachionus satanicus Brachionus budapestinensis Harpacticoida ##[88] Trichotria Keratella chussa Scapholeberis ##[91] Mysis relicta Wolga Chaoborus americanus ##[94] Lophocharis Simocephalus Proales ##[97] Kellicottia Keratella serrulata Copepoda ##[100] Latona Sinantherina Daphnia ctenodaphnia ##[103] Macrothricidae Brachionus zahniseri Cephalodella ##[106] Epiphanidae Monommata Epiphanes ##[109] Keratella ticinensis Keratella irregularis Daphnia dubia ##[112] Dreissena Brachionus leydigi Keratella valga ##[115] Limnias Wierzejskiella Artemia ##[118] Gammaridae Notommatidae Bythotrephes ##[121] Eurycercus Brachionus pterodinoides Brachionus falcatus ##[124] Resticula Bosminidae Coliothecidae ##[127] Bosminopsis

Temporal Coverage

Project Data

No Description available

The personnel involved in the project:

Sampling Methods

In preparation for the survey, each target lake was screened to verify that it met the established criteria for inclusion in the survey. Throughout the summer of 2007, 86 field crews, consisting of 2 to 4 people each, sampled lakes from Maine to California. At each lake site, crews collected samples at a single station located at the deepest point in the lake and at ten stations around the lake perimeter (Figure 4). At the midlake station, depth profiles for temperature, pH, and dissolved oxygen were taken with a calibrated water quality probe meter or multi-probe sonde. A Secchi disk was used to measure water clarity and depth at which light penetrates the lake (the euphotic zone). NLA analysts used these vertical profile measurements to determine the extent of stratification and the availability of the appropriate temperature regime and level of available oxygen necessary to support aquatic life. Single grab water samples were collected to measure nutrients, chlorophyll-a, phytoplankton, and the algal toxin microcystin. Zooplankton samples were collected using a fine mesh (80µm) and course mesh (243µm) conical plankton net. A sediment core was taken to provide data on sediment diatoms and mercury levels. The top and bottom layers of the sediment core were analyzed to detect possible changes in diatom assemblages over a period of time.

Method step description:

1. Since a census of every lake in the country is cost prohibitive and beyond the reach of any program, EPA used a statistical sampling approach incorporating state-ofthe-art survey design techniques. The first step, to ascertain the number of lakes in the country, was challenging because there is no comprehensive list or source for all lakes in the U.S. The best resource available is the USGS/EPA National Hydrography Dataset or NHD.

Additional Metadata