Kenai National Wildlife Refuge Aquatic Invasive Plant Surveys 2023

Occurrence
Последняя версия опубликовано United States Fish and Wildlife Service дек. 6, 2023 United States Fish and Wildlife Service
Дата публикации:
6 декабря 2023 г.
Опубликовано:
United States Fish and Wildlife Service
Лицензия:
CC0 1.0

Скачайте последнюю версию данных этого ресурса в формате Darwin Core Archive (DwC-A) или метаданных ресурса в форматах EML или RTF:

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Описание

To maintain biological integrity, biological diversity, and native fish resources in Kenai Peninsula freshwater systems, we surveyed for invasive elodea in Kenai Peninsula lakes using rakethrow surveys.

Записи данных

Данные этого occurrence ресурса были опубликованы в виде Darwin Core Archive (DwC-A), который является стандартным форматом для обмена данными о биоразнообразии в виде набора из одной или нескольких таблиц. Основная таблица данных содержит 476 записей.

Также в наличии 2 таблиц с данными расширений. Записи расширений содержат дополнительную информацию об основной записи. Число записей в каждой таблице данных расширения показано ниже.

Occurrence (core)
476
MeasurementOrFacts 
1428
Multimedia 
970

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Версии

В таблице ниже указаны только опубликованные версии ресурса, которые доступны для свободного скачивания.

Права

Исследователи должны соблюдать следующие права:

Публикующей организацией и владельцем прав на данную работу является United States Fish and Wildlife Service. Насколько это возможно по закону, издатель отказался от всех прав на эти данные и посвятил их Public Domain (CC0 1.0). Пользователи могут без ограничений копировать, изменять, распространять и использовать работу, в том числе в коммерческих целях.

Регистрация в GBIF

Этот ресурс был зарегистрирован в GBIF, ему был присвоен следующий UUID: bb398390-d071-4e6b-aa2e-e69709d620fb.  United States Fish and Wildlife Service отвечает за публикацию этого ресурса, и зарегистрирован в GBIF как издатель данных при оподдержке GBIF-US.

Ключевые слова

Occurrence; Observation

Контакты

Matthew Bowser
  • Metadata Provider
  • Originator
  • Point Of Contact
  • Fish and Wildlife Biologist
USFWS Kenai National Wildlife Refuge
  • PO Box 2139
99669 Soldotna
Alaska
US
Kristine Inman
  • AssociatedParty
  • Originator
  • Point Of Contact
  • Supervisory Biologist
USFWS Kenai National Wildlife Refuge
  • PO Box 2139
99669 Soldotna
Alaska
US
Nathan Davis
  • Originator
  • Biological Technician
USFWS Kenai National Wildlife Refuge
  • PO Box 2139
99669 Soldotna
Alaska
US
Kristian Merrell
  • Originator
  • Biological Technician
USFWS Kenai National Wildlife Refuge
  • PO Box 2139
99669 Soldotna
Alaska
US
Beth Sullivan
  • Originator
  • Volunteer
USFWS Kenai National Wildlife Refuge
  • PO Box 2139
99669 Soldotna
Alaska
Dom Watts
  • Originator
  • Wildlife Biologist/Pilot
USFWS Kenai National Wildlife Refuge
  • PO Box 2139
99669 Soldotna
Alaska
US
Chris Snyder
  • Originator
  • Student Conservation Association Crew
USFWS Kenai National Wildlife Refuge
  • PO Box 2139
99669 Soldotna
Alaska
US
Sean Wise
  • Originator
  • Biological Intern
USFWS Kenai National Wildlife Refuge
  • PO Box 2139
99669 Soldotna
Alaska
US
Ethan Bowser
  • Originator
  • Volunteer
USFWS Kenai National Wildlife Refuge
  • PO Box 2139
99669 Soldotna
Alaska
US
Shealyn Imgarten
  • Originator
  • Youth Conservation Corp Crew Leader
USFWS Kenai National Wildlife Refuge
  • PO Box 2139
99669 Soldotna
Alaska
US

Географический охват

The geographic extent included freshwater lakes in the vicinity of the Kenai National Wildlife Refuge, Kenai Peninsula, Alaska, USA.

Ограничивающие координаты Юг Запад [59,131, -151,611], Север Восток [61,09, -149,348]

Таксономический охват

We surveyed for non-native plants, especially Elodea.

Kingdom Plantae (plants)

Временной охват

Дата начала / Дата окончания 2023-06-27 / 2023-09-22

Данные проекта

Описание отсутсвует

Название Kenai National Wildlife Refuge Aquatic Invasive Species Surveys
Идентификатор https://ecos.fws.gov/ServCat/Reference/Profile/149924
Финансирование This work was funded by National Wildlife Refuge System Strike Team Funds.
Описание района исследования The Study area was much of the northwestern Kenai Peninsula where most of the Kenai National Wildlife Refuge is situated, bounded by Tustumena Lake to the south, Cook Inlet to the west, Turnagain Arm to the north, and the Kenai Mountains to the east. This area is characterized by mixed boreal forest, wetlands, lakes, and streams. This region was described in detail by Kenai National Wildlife Refuge and US Fish & Wildlife Service, Alaska Regional Office, Division of Conservation Planning & Policy (2010).

Исполнители проекта:

Kristine Inman
Nathan Davis
Kristian Merrell
Sean Wise
Dominique Watts
  • Author
Beth Sullivan
  • Author
Chris Snyder
  • Author
Ethan Bowser
  • Author
Shealyn Imgarten
  • Author

Методы сбора

We selected 23 lakes to survey for elodea in 2023, mostly basing our selections on the prioritization of the Alaska Department of Fish and Game’s Invasive Species Lake Prioritization (Alaska Department of Fish and Game, 2022). We also took into account recent pike surveys, avoiding lakes that had been surveyed for pike in the last 10 years or where surveys are planned for 2024. We collaboratively planned with our partners, openly sharing our survey schedule. We sought to keep the number of sites sampled per lake to between 30 and 60 sampling locations per lake. We related the range of lake perimeters in our study area to this range of sample sizes with the linear formula n = mp + b, where where n was the sample size, m was 2.4 km-1, p was the perimeter in km, and b was 27. This resulted in a range of sample sizes of 30 to 63 sampling locations per lake. To select sampling points we used a Quarto document that called R, version 4.2.3 (R Core Team, 2023) and used the R packages lwgeom, version 0.2-13 (Pebesma, 2023) and sf, version 1.0-12 (Pebesma, 2018; Pebesma and Bivand, 2023). We divided the lake perimeters into segments, one segment corresponding to a target sampling location in each lake. Our rake throw survey methods were similar to the examples of Fulkerson (2022a) and Fulkerson (2022b).

Охват исследования Our target universe was the set of all waterbodies in the study area susceptible to invasion by non-native plants, particularly elodea. Our initial sample frame was the set of lakes in the vicinity of the Kenai National Wildlife Refuge. We considered individual lakes to be the sampling units.

Описание этапа методики:

  1. Within each pre-determined lake segment, we selected a location where elodea would be most likely to occur based on our previous experience surveying for elodea on the Kenai Peninsula. Within the larger segments, we selected protected bays and avoided exposed points. We positioned our boat off of shore, usually a little farther from shore than the limit of dense emergent vegetation, often in about 1–2 m water depth.
  2. From the selected point the two observers threw the two rakes perpendicular to the shoreline: one rake thrown toward shore and the other out toward the center of the lake. After allowing the rakes to contact the bottom, both observers slowly and simultaneously pulled in the rakes, dragging them over the substrate. The rakes were carefully brought onto the boat, photographed, and the presence or absence of elodea was recorded. We also recorded depth, substrate types, and the presence of other aquatic plant species.

Библиографические ссылки

  1. Alaska Department of Fish and Game (2022) Alaska invasive species lake prioritization. Alaska Department of Fish and Game. https://experience.arcgis.com/experience/41a6f3a3f35f4e0fae52f9c5a0c2fbd2/ https://experience.arcgis.com/experience/41a6f3a3f35f4e0fae52f9c5a0c2fbd2/
  2. Kenai National Wildlife Refuge & US Fish & Wildlife Service, Alaska Regional Office, Division of Conservation Planning & Policy (2010) Comprehensive Conservation Plan: Kenai National Wildlife Refuge. Anchorage, Alaska: U.S. Fish & Wildlife Service. https://ecos.fws.gov/ServCat/Reference/Profile/149784 https://ecos.fws.gov/ServCat/Reference/Profile/149784
  3. Fulkerson JR (2022a) Aquatic Plant and Elodea Survey in Chugach National Forest: 2021 Survey Results. Anchorage, Alaska: Alaska Center for Conservation Science, University of Alaska Anchorage, pp. 26 + appendix.
  4. Fulkerson JR (2022b) Aquatic Plant and Elodea Survey in Chugach National Forest: 2022 Survey Results. Anchorage, Alaska: Alaska Center for Conservation Science, University of Alaska Anchorage, pp. 21 + appendix.
  5. Pebesma E (2018) Simple features for R: Standardized support for spatial vector data, The R Journal, 10(1), pp. 439–446. https://doi.org/10.32614/RJ-2018-009. https://doi.org/10.32614/RJ-2018-009
  6. Pebesma E (2023) lwgeom: Bindings to selected ’liblwgeom’ functions for simple features. https://CRAN.R-project.org/package=lwgeom. https://CRAN.R-project.org/package=lwgeom
  7. Pebesma E & Bivand R (2023) Spatial data science: With applications in R. Chapman and Hall/CRC, p. 352. https://r-spatial.org/book/. https://r-spatial.org/book/
  8. R Core Team (2023) R: A language and environment for statistical computing. Vienna, Austria: R Foundation for Statistical Computing. https://www.R-project.org/. https://www.R-project.org/

Дополнительные метаданные

Альтернативные идентификаторы bb398390-d071-4e6b-aa2e-e69709d620fb
https://ipt.gbif.us/resource?r=kenai-national-wildlife-refuge-aquatic-invasive-plant-surveys