Macroinvertebrate composition and distribution in Zigi (Sigi) River Catchment: A Global Biodiversity Hotspot in Northeastern-Tanzania.

Descripción

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¿Cómo referenciar?

Los usuarios deben citar este trabajo de la siguiente manera:

Masikini, R., Magidi, A., Mwaijengo, G. N., Ngondya, I., Munishi, L., Gideon, H., Ally, M.A., Bernard, C.C., Milola, S. (2022). Macroinvertebrate composition and distribution in Zigi (Sigi) River Catchment: A Global Biodiversity Hotspot in northeastern-Tanzania.

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El publicador y propietario de los derechos de este trabajo es TanBIF. Este trabajo está autorizado bajo una Licencia Creative Commons Atribución/Reconocimiento 4.0 Internacional (CC-BY) 4.0.

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Este recurso ha sido registrado en GBIF con el siguiente UUID: a3cc6254-e711-40e9-b2fd-2e05ab2b6088.  TanBIF publica este recurso y está registrado en GBIF como un publicador de datos avalado por Tanzania Biodiversity Information Facility.

Palabras clave

Macroinvertebrates; Zigi (Sigi) River Catchment; Tanzania; Biodiversity Hotspot; Occurrence; Northeastern-Tanzania.; Observation

Contactos

Cobertura geográfica

Zigi River catchment lies between latitudes 4o48´S and 5o15´S and longitudes 38o34´E and 39o03´E with a catchment area of about 1,100km2 (Biervliet et al., 2009; Masikini et al., 2018). The river rises in the Amani Nature Reserve on the eastern slopes of the East Usambara Mountains at an altitude of 1130m and flows for 100km long to its mouth in the Indian Ocean north of Tanga town (Masikini et al., 2018). Sigi River has two main tributaries flowing from the north-Muzi stream and south-Kihuhwi stream. The upper reaches of the catchment area are mountainous, consisting mainly of dense forest interspersed with tea plantations (Biervliet et al., 2009; Masikini et al., 2018). Its lower parts are flat and some parts are rejuvenated comprising dry savannah-type bushes and low trees, as well as sisal estates. Along the coast coconut and palm trees are common (Masikini et al., 2018).

Cobertura taxonómica

This dataset present macroinvertebrate assemblages observed in the 11 sites in the Zigi River Catchment between March 2012 and May 2012 .The main taxonomic groups in this dataset are family, genus, and species. The dataset contains a total of 3046 occurrences belonging to 56 genera, 47 families and 1 species.

Cobertura temporal

Datos del proyecto

Although the current National Biodiversity Strategy and Action Plan (NBSAP 2015-2020) emphasizes the need for mainstreaming freshwater biodiversity information into sector policies, plans, and programs; the lack of accessible, reliable, and ready to use freshwater invertebrates biodiversity (FIB) data hinders its effective implementation by policy and decision-makers in different sectors, and the realization of NBSAP 2015-2020 targets. Inadequate information on the geographical distribution of FIB further hampers decision-making for conservation. This project aims at collating existing freshwater Insects (Odonata, Coleoptera, Hemiptera, Ephemeroptera, and Diptera), Mollusks (Gastropoda), and Crustacea (Crabs and Shrimps) (FIMC) species data from northeastern, Tanzania from various institutions and sources, including Tanzania Biodiversity Information Facility (TanBIF), IUCN database, River Basins, Universities, natural history collections, and literature, to create a useable and accessible FIMC database, develop FIMC species distribution maps, supplement the existing FIMC database under TanBIF, establish FIMC monitoring protocol and produce FIMC assessment status (IUCN Red List category) that can be adopted by policymakers and be integrated into decision-making processes by different stakeholders in different sectors. This will be used as a framework to guide the formulation of effective FIMC conservation-related policy and guidelines that will address NBSAP 2015-2020 and Aichi biodiversity targets (CBD 2020), and fulfilling national obligations under articles 7, 8, 10, 11, 13, and 16 of the biodiversity conservations. The long-term project objectives are to contribute substantially to the formulation of a platform where stakeholders feed FIMC data to foster conservation and sustainable use of freshwater ecosystems. This will promote the formation of linkages between TanBIF/GBIF and identified FIMC data holding stakeholders for sustainable monitoring of FIB at large.

Personas asociadas al proyecto:

Métodos de muestreo

A qualitative sampling of macro-invertebrates was conducted by the same operator using a 30*30cm kick net with a 1mm mesh size and applying time-limited samples (3 minutes). In each station, the dominant biotope (stones, sand, and vegetation) was identified which was simply the habitat contributing to more than 50% of the area within the selected 50 m reach for sampling. Three replicates samples of macroinvertebrates were collected in the selected biotope. All individuals in a sample were counted and most were identified to the Genus level except a few of them to the family level (Baetidae, Leptophlebiidae, Polycentropodidae, Polymitarcyidae, Tricorythidae, Veliidae, and Hirudinea) and Chironomidae and Elmidae were identified to subfamily level following different identification keys (Croft, 1986; Davies and Day, 1998; Gerber and Gabriel, 2002).

Descripción de la metodología paso a paso:

1. We collated all the macroinvertebrates data into Microsoft Excel spreadsheets according to Darwin-Core standard i.e., following Darwin core quick reference guide. We verified the taxonomic nomenclature using the “species matching” tool available on the GBIF website (https://www.gbif.org/tools/species-lookup). To ensure data adherence to Darwin Core standards we performed data cleaning. We used the data validator tool available on the GBIF website (https://www.gbif.org/tools/data-validator) to identify missing or incorrect information in our dataset. The two tools used are open-source software.

Referencias bibliográficas

1. Biervliet, O. van, Daniels, J., Vonesh, J.R., 2009. Effects of Tea Plantations on Stream Invertebrates in a Global Biodiversity Hotspot in Africa. Biotropica 41, 469–475. Clausnitzer, V., 2003. Rediscovery of Amanipodagrion gilliesi , with notes on habitat , behaviour and conservation ( Odonata : Megapodagrionidae ). Int. J. Odonatol. ISSN 6, 1–8. https://doi.org/10.1080/13887890.2003.10510445 Croft, P.S., 1986. A Key to the Major Groups of British Freshwater Invertebrates. Rep. Pub. FSC. 1986. Davies, B., Day, J., 1998. Vanishing Waters: Keys to common macroinvertebrate taxa of South African Inland Waters. Gerber, A., Gabriel, M.J.M., 2002. Aquatic Invertebrates of South African Rivers: Field Guide. Institute for Water Quality Studies. Masikini, R., Kaaya, L.T., Chicharo, L., 2018. Evaluation of ecohydrological variables in relation to spatial and temporal variability of macroinvertebrate assemblages along the Zigi River – Tanzania. Ecohydrol. Hydrobiol. 18, 130–141. https://doi.org/10.1016/j.ecohyd.2018.03.004 .

Metadatos adicionales