Rhodolith Beds in Northern New Zealand: Characterisation of Associated Biodiversity

資料紀錄

此資源sampling event的資料已發佈為達爾文核心集檔案（DwC-A），其以一或多組資料表構成分享生物多樣性資料的標準格式。 核心資料表包含 30 筆紀錄。

亦存在 2 筆延伸集的資料表。延伸集中的紀錄補充核心集中紀錄的額外資訊。 每個延伸集資料表中資料筆數顯示如下。

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如何引用

研究者應依照以下指示引用此資源。:

Nelson, W.A.; Neill, K.; Barr, N.; D'Archino, R.; Miller, S.; Stewart, R. (2012). Data from: Rhodolith Beds in Northern New Zealand: Characterisation of Associated Biodiversity. Southwestern Pacific OBIS, National Institute of Water and Atmospheric Research (NIWA), Wellington, New Zealand, 684 records, Online http://nzobisipt.niwa.co.nz/resource.do?r=rhodolithhabitats released on June 20, 2015.

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此資料的發布者及權利單位為 The National Institute of Water and Atmospheric Research (NIWA)。 This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF 註冊

此資源已向GBIF註冊，並指定以下之GBIF UUID: 36ae4600-17b1-437c-bdc5-7a3c98b1bff4。  The National Institute of Water and Atmospheric Research (NIWA) 發佈此資源，並經由GBIF New Zealand同意向GBIF註冊成為資料發佈者。

關鍵字

Occurrence; Observation

聯絡資訊

地理涵蓋範圍

Bay of Islands, at Kahuwhera Bay and Te Miko Reef

時間涵蓋範圍

取樣方法

At each location, sites inside and outside the rhodolith beds were assessed (two sites at each location, i.e., Kahuwhera Bay - KWB and KWB_OUT, Te Miko Reef - TMR and TMR_OUT). At Te Miko Reef an additional site containing mixed rhodolith species was also assessed (TMR_B). As the beds were more or less at single depth (approximately 8 m), it was not necessary to stratify sampling by depth.

方法步驟描述:

1. At each site two 25 m transects were laid out at right angles to the anchor line, creating a single 50 m transect. On each transect, a random point quadrat (RPQ) (after Foster et al. 2007) was used at eight points, 5 m apart, to record the biogenic substrate type (rhodoliths, algae, microalgal mat and sponge/tunicate or bare substrate) under each of 10 knots. The point quadrat was a 1 m long bar with a 120 cm long string attached like a loose string on a bow. Five knots on the string were used as points and the organisms or substrate found on each side of the bar were sampled giving 10 points per quadrat (as detailed in Foster 1975). At sites within the rhodolith beds (i.e., KWB, TMR, TMR_B) all live rhodoliths and associated biodiversity from within a 25 by 25 cm quadrat were collected into plastic bags at each of the eight random points on the transect. These quadrat samples were tipped out into large plastic containers and then thoroughly sorted. All associated epibiota were removed and preserved appropriately for each taxon group for later identification to species level where possible. The rhodoliths were identified to 12 •Rhodolith beds in northern New Zealand Ministry for Primary Industries species, assessed for vitality (proportion of dead and live rhodoliths), and measured to obtain size frequency at each site. Rhodoliths were collected from both locations and transported to Wellington for experimental work on vulnerability to stressors (Objective 2). Infauna were assessed using a cylindrical 10 cm diameter by 10 cm depth core to remove substrate under each quadrat. A sample of sediment was kept from each core for subsequent grain size analysis (i.e., one sediment sample per quadrat). Core samples were sieved through a 5 mm mesh. All macrofauna (approximately 5 mm and above) were sorted to phylum and preserved appropriately for later identification to species level where possible.

引用文獻

1. Nelson, W.A.; Neill, K.; Barr, N.; D'Archino, R.; Miller, S.; Stewart, R. (2012) .Rhodolith Beds in Northern New Zealand: Characterisation of Associated Biodiversity and Vulnerability to Environmental Stressors New Zealand Aquatic Environment and Biodiversity Report No. 99. ISSN 1179-6480 (online). ISBN 978-0-478-40077-9 (online)

額外的詮釋資料