Descrição
The Maine-New Hampshire Inshore Trawl Survey is a fishery-independent survey operated by Maine Department of Marine Resources that started in the fall of 2000. The survey is a collaborative partnership between commercial fishermen and state researchers to assess inshore fish stocks along the coast of Maine and New Hampshire. The survey occurs twice a year, in the spring and fall, and covers about 4500 square miles. A more detailed description and protocols for the survey can be found here. Reports and publications from the ME-NH trawl survey can be accessed here.
Survey Design The ME-NH survey is a stratified random survey, separated into four depth strata and five geographic regions along the coast of Maine and New Hampshire. The inner boundary is defined by the shallowest depth that the 55-ft survey vessel can effectively sample (about 5 meters) and the deeper boundary loosely follows the 12 mile limit. One hundred and twenty stations are randomly selected for sampling before the start of each spring survey. The randomly selected sites that were successfully sampled in the spring are resampled again in the fall. The goal is to complete one, twenty minute, tow using a modified shrimp net at each randomly selected station. However, sometimes due to bottom the tow is moved or shortened. After the tow is completed, the catch is brought on board and sorted by species. The total weight of each species is weighed and then lengths are measured. Most species are measured to the nearest centimeter, except for lobsters, scallops, and urchins which are measured to the nearest millimeter. Finfish are measured for total centerline length, lobsters and northern shrimp for carapace lengths, crab species for carapace width, scallops for shell height, squid for mantle length, and octopi are measured out to the longest arm. If there is a large catch of a species a subsample is taken and 100 individuals are randomly selected for measurement. Selected species are sampled for maturity and age samples each survey.
Registros de Dados
Os dados deste recurso de evento de amostragem foram publicados como um Darwin Core Archive (DwC-A), que é o formato padronizado para compartilhamento de dados de biodiversidade como um conjunto de uma ou mais tabelas de dados. A tabela de dados do núcleo contém 3.851 registros.
Também existem 2 tabelas de dados de extensão. Um registro de extensão fornece informações adicionais sobre um registro do núcleo. O número de registros em cada tabela de dados de extensão é ilustrado abaixo.
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.
Versões
A tabela abaixo mostra apenas versões de recursos que são publicamente acessíveis.
Como citar
Pesquisadores deveriam citar esta obra da seguinte maneira:
Rebecca Peters. Maine Department of Marine Resources Inshore Trawl Survey, 2000 – 2019. 2022. Maine Department of Marine Resources, PO Box 8, West Boothbay Harbor, Maine 04575.
Direitos
Pesquisadores devem respeitar a seguinte declaração de direitos:
O editor e o detentor dos direitos deste trabalho é United States Geological Survey. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF Registration
Este recurso foi registrado no GBIF e atribuído ao seguinte GBIF UUID: eef4456e-e582-42a0-8b69-3297e86129ae. United States Geological Survey publica este recurso, e está registrado no GBIF como um publicador de dados aprovado por GBIF-US.
Palavras-chave
Samplingevent
Dados externos
Os dados de recurso também estão disponíveis em outros formatos
| Maine DMR Trawl Survey Portal | https://mainedmr.shinyapps.io/MaineDMR_Trawl_Survey_Portal/ ASCII Shiny App Portal |
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Contatos
- Provedor Dos Metadados ●
- Originador ●
- Ponto De Contato
- Marine Resource Scientist
http://orcid.org/0000-0002-4391-107X
- Processador
- Student
Cobertura Geográfica
Maine and New Hampshire
| Coordenadas delimitadoras | Sul Oeste [42,618, -72,158], Norte Leste [45,46, -66,489] |
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Metadados Adicionais
| Identificadores alternativos | https://www1.usgs.gov/obis-usa/ipt/resource?r=me_dmr_trawl |
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