BioFresh project
SHOW FRESHWATER PLATFORM MENU

Member of the

Freshwater Information Platform

Metadatabase view - dataset: Metadata of the Danube Delta Database

General information

dataset entry ID:
MARS_12
name of the dataset:
full name of the dataset:
Metadata of the Danube Delta Database
dataset short name:
DELTA
type of dataset (more information):
species (taxonomic group) per site database including environmental information
specify:
aquatic macrophytes, fish, macro-invertebrate
data type:
point data/observation data, vector data (shape files)
short description of the dataset/summary:
A description of biological and ecological data of the Danube delta lakes and channels is presented. The biological indicators refer to aquatic macrophytes, fish, zoo-plankton, and macro-invertebrates. Environmental data include physio-chemical data as well as hydrological parameters.
science keywords according to GCMD:
topic:
Biosphere, Biological Classification, Terrestrial Hydrosphere
keywords:
Danube delta , aquatic macrophytes, fish, zoo- plankton, macro-invertebrate
ISO topic category according to ISO 19115:
Biota, Environment, Inland Waters

Technical and administrative specifications

data format:
Excel
operating system:
all Windows systems
English
current access level:
restricted access, internal
currently available through GBIF:
no
exchange planned:
no
Do you plan to publish the data on the Freshwater Biodiversity Data Portal:
no
update level:
continuously updated
type:
internal description
language:
English
contact details:
metadata contact person:

first, last name:
Jenica
 
Hanganu
email:
jenica.hanganu@ddni.ro
institution:
Danube Delta National Institute for Research and Development
address:
Babadag 165
postal code, city:
820112
 
Tulcea
country
Romania
technical contact person:

Ion
 
Grigoras
ion.grigoras@ddni.ro
scientific contact person:

first, last name:
Ion
 
Navodaru
email:
ion.navodaru@ddni.ro

Intellectual property rights and citation

dataset creator (data compiler):
contact name:
Jenica Hanganu
contact email:
jenica.hanganu@ddni.ro
contact institution:
Danube Delta National Institute for Research and Development
data contributors to/owners of this dataset:
multiple
number:
4
data contributor/owner 1
contact name:
Ion Navodaru, Aurel Nastase
contact email:
ion.navodaru@ddni.ro
contact institute:
Danube Delta National Institute for Research and Development
criteria for using this part of the dataset:
The dataset needs to be requested from dataset creator with specific conditions of use.

comments:
Fish database
data contributor/owner 2
contact name:
Iuliana Mihaela Tudor
contact email:
mihaela.tudor@ddni.ro
contact institute:
Danube Delta National Institute for Research and Development
criteria for using this part of the dataset:
The dataset needs to be requested from dataset creator with specific conditions of use.

comments:
Zoo-plankton database
data contributor/owner 3
contact name:
Orhan Ibram
contact email:
orhan.ibram@ddni.ro
contact institute:
Danube Delta National Institute for Research and Development
criteria for using this part of the dataset:
The dataset needs to be requested from dataset creator with specific conditions of use.

comments:
Macro-invertebrates database
data contributor/owner 4
contact name:
Jenica Hanganu, Mihai Doroftei
contact email:
jenica.hanganu@ddni.ro , mihai.doroftei@ddni.ro
contact institute:
Danube Delta National Institute for Research and Development
criteria for using this part of the dataset:
The dataset needs to be requested from dataset creator with specific conditions of use.

comments:
Aquatic macrophytes database
citation of this dataset:
author(s):
Hanganu J., Navodaru I., Tudor I. M., Ibram O., Doroftei M., & Nastase A.
title:
Danube Delta database
year:
2014
citation of the metadata:
author(s):
Hanganu J., Navodaru I., Tudor I. M., Ibram O., Doroftei M., & Nastase A.
title and journal (name, number, pages):
Introduction of the Danube Delta Database. Freshwater Metadata Journal 8: 1-11
year:
2015
doi (if applicable):
https://doi.org/10.15504/fmj.2015.8

General data specifications

regional coverage of the dataset:
scale of the dataset:
regional
continents:
Europe
southernmost latitude [°]:
44°20'56.16''
northernmost latitude [°]:
45°26'57.30''
westernmost longitude [°]:
28°28'51.10''
easternmost longitude [°]:
29°49'37.16''
        
minimum altitude:
0.0
 
metres
maximum altitude:
47
 
metres
Europe: Romania
comments:
Danube Delta Biosphere Reserve - Romania
Group D: continental/microthermal climate
 
Europe:
Dniester - Lower Danube
Pontic Province (ER12)
ecosystem type:
rivers, lakes/ponds, wetlands, coastal areas
2000
 
year to:
2014

Site specifications

coordinate system/grid data:
latitude/longitude
projected
datum (e.g. WGS84):
EPSG 31700
grid data available:
no
resolution:
1/25000
rivers (classification according to WFD):
altitude typology:
 lowland: <200 m
 exact altitudinal data available: yes
lakes (classification mainly according to WFD):
altitude typology:
 lowland: <200 m
depth typology based on mean depth:
 < 3m
 exact depth data available: yes
size typology based on surfcae area:
 0,5 to 1 km², 1 to 10 km², 10 to 100 km², > 100 km²
 exact surface area data available: yes
geology:
 calcareous
 exact geological data available: yes
trophic state:
wetlands (classification according to GLWD):
wetland type:
 coastal wetland (including mangrove, estuary, delta, lagoon)
wetland size:
 50-100% wetland
 exact wetland size data available: yes
site coding available:
yes
alphanumerical
example:
ROSCI 0065 Danube Delta
number of sites:
<100
15

Climate and environmental data

climate related data:
available per:
per catchment
spatial resolution of the data (if not catchment/site related):
50 km
available parameters:
mean annual temperature January, July
data source:
http://www.meteoromania.ro/anm/?page_id=138
available parameters:
mean annual temperature for each month
data source:
http://www.meteoromania.ro/anm/?page_id=138
available parameters:
minimal, maximal and mean winter and summer temperatures
data source:
http://www.meteoromania.ro/anm/?page_id=138
available parameters:
daily air temperatures
data source:
http://www.meteoromania.ro/anm/?page_id=138
available parameters:
mean annual precipitation
data source:
http://www.meteoromania.ro/anm/?page_id=138
available parameters:
winter and summer precipitation
data source:
http://www.meteoromania.ro/anm/?page_id=138
available parameters:
evaporation
data source:
http://www.meteoromania.ro/anm/?page_id=138
available parameters:
mean discharge
data source:
http://www.meteoromania.ro/anm/?page_id=138
environmental data:
available parameters per catchment:
catchment size
data source:
http://www.icpdr.org/main/danube-basin
available parameters per catchment:
catchment land cover/land use
data source:
GIO Land Monitoring 2011-2013 in the framework of regulation (EU) No 911/2010
available parameters per catchment:
hydrological regime/flow regime
data source:
Sobek rural 1D/2D for the lower Danube and Danube delta
available parameters per site:
catchment land use upstream of sampling site
data source:
GIO Land Monitoring 2011-2013 in the framework of regulation (EU) No 911/2010
available parameters per site:
catchment land use along a buffer strip (100m width on both sides) upstream (10km) of the sampling site
data source:
GIO Land Monitoring 2011-2013 in the framework of regulation (EU) No 911/2010
available parameters per site:
information on floodplain inundation duration
data source:
Sobek rural 1D/2D for the lower Danube and Danube delta
available parameters per site:
information on riparian vegetation (incl. information on modification)
data source:
Hanganu J. et. al., 2002
available parameters per site:
information on embankment (incl. information on modification)
data source:
DTM of the Danube delta and Danube river
available parameters per site:
information on channel form (incl. information on modification)
data source:
DTM of the Danube delta and Danube river
available parameters per site:
information on cross section (incl. information on modification)
data source:
Sobek rural 1D/2D for the lower Danube and Danube delta
available parameters per site:
distance to next migration barrier upstream
data source:
DTM of the Danube delta and Danube river
available parameters per site:
distance to the next lake upstream
data source:
DTM of the Danube delta and Danube river
available parameters per site:
distance to the next main village/town upstream
data source:
DTM of the Danube delta and Danube river
available parameters per site:
river length
data source:
http://www.icpdr.org/main/danube-basin
available parameters per site:
distance to source
data source:
http://www.icpdr.org/main/danube-basin
available parameters per site:
distance to mouth
data source:
http://www.icpdr.org/main/danube-basin
available parameters per site:
stream order (according to Strahler)
data source:
DTM of the Danube delta and Danube river
available parameters per site:
slope
data source:
DTM of the Danube delta and Danube river
available parameters per site:
hydrological regime/flow regime
data source:
Sobek rural 1D/2D for the lower Danube and Danube delta
available parameters per site:
discharge
data source:
Sobek rural 1D/2D for the lower Danube and Danube delta
available parameters per site:
current velocity
data source:
Sobek rural 1D/2D for the lower Danube and Danube delta
available parameters per site:
maximum depth
data source:
Sobek rural 1D/2D for the lower Danube and Danube delta
available parameters per site:
mean depth
data source:
Sobek rural 1D/2D for the lower Danube and Danube delta
available parameters per site:
information on instream habitat (incl. information on modification)
comments:
Hanganu, J., Dubyna, D., Zhmud, E., Grigoras, I., Menke, U., Drost, H., Stefan, N., & Sârbu, I. (2002). Vegetation of the Biosphere Reserve "Danube Delta" with Transboundary Vegetation Map on a 1: 150000 scale. Danube Delta National Institute, Romania; M.C. Kholodny - Institute of Botany & Danube Delta
Biosphere Reserve, Ukraine and RIZA The Netherlands. RIZA Rapport 2002049, Lelystadt.
physico-chemistry data:
total P, ortho P, total dissolved P, nitrate, nitrite, total N, ammonium, sulphate, chloride, sodium, magnesium, calcium, alkalinity, TOC (total organic carbon), oxygen content, BOD5 (biochemical oyxgen demand), water temperature, pH, conductivity, chlorophyll, Secci disc depth, suspended solids, substrate, sediment/soil parameters
availability of physico-chemical data, if there is more than one sample per site:
mean values per site
comments:
reference sites available:
yes
available stressor types:
stressorrestored sites availabledata before/after restoration availablestressor gradient availablecomments
eutrophication
yes
yes
no
 
hydromorphological degradation
yes
yes
no
 
hydrologic stress (e.g. impoundment, flow velocity reduction, hydropeaking, water abstraction, flow velocity increase)
yes
yes
yes
 

Biological data

biological data origin:
from sampling; specify project:
Danube delta monitoring programm and other national and international collaboratives projects
organism group addressed:
fish, macro-invertebrates (Mollusca, Ephemeroptera, Odonata, Coleoptera, Trichoptera, Chironomidae), zooplankton, macrophytes

Sample specifications/sample resolution

fish

sample information:
covered timeframe:

year from - to:
1996 - 2014
historical data:
no
palaeo data:
no
season:
spring, summer, autumn
temporal resolution/frequency of sampling:
per season and/or per year
time series data:
no
taxonomic resolution:
family, genus, species
percentage of species level data:
100
taxonomic coding:
taxalist according to:
Kotelat & Freyhof 2007
Kottelat M. and J. Freyhof 2007. European Freshwater Fishes. Kottelat, Cornol, Switzerland and Freyhof, Berlin, Germany. 646p. ISBN 978-2-8399-0298-4. Banarescu P., 1964. Pisces Osteichthyes. Fauna Republicii Populare Romane. Bucuresti, 963p. Froese, R. and D. Pauly. Editors. 2015. FishBase. World Wide Web electronic publication. www.fishbase.org, version (04/2015).
no number coding system for taxa
genus & species: Esox lucius
sample specifications:
quantitative (abundance data)
500
scientific fishing with: research seine, commercial gillnets, nordic gillnets, electric fishing
CEN, 2005. Water quality - Sampling of Fish with multi-mesh gillnets. EN 14757:2005:E. CEN, 2003. Water quality - Sampling of fish with electricity. EN 14011:2003:E.
composite samples
large rivers, canals, shallow lakes, littoral sea
other important sample related informations:
relative abundance and biomass data (Catch per Unit Fishing Effort - CPUE)

macro-invertebrates

sample information:
covered timeframe:

year from - to:
2000 - 2014
historical data:
no
palaeo data:
no
season:
spring, summer, autumn
temporal resolution/frequency of sampling:
minimum 3/year
time series data:
no
taxonomic resolution:
family, genus, species
percentage of species level data:
100
taxonomic coding:
taxalist according to:
Fauna Europaea
de Jong, Y.S.D.M. (ed.) (2013) Fauna Europaea version 2.6. Web Service available online at http://www.faunaeur.org
sample specifications:
quantitative (abundance data), semi-quantitative
no
700
Sampling with Ekman-Birge grab and hand-net; samples sieved with 500 micrometer mesh size; samples preserved in 70% ethanol.
ISO 10870: 2012-10 Water quality - Guidelines for the selection of sampling methods and devices for benthic macroinvertebrates in fresh waters
composite sample
shallow lakes and channels

zooplankton

sample information:
covered timeframe:

year from - to:
2000 - 2014
historical data:
no
palaeo data:
no
season:
spring, summer, autumn
temporal resolution/frequency of sampling:
minimum 3/year
time series data:
no
taxonomic resolution:
family, genus, species
percentage of species level data:
100
taxonomic coding:
taxalist according to:
Fauna Europaea
de Jong, Y.S.D.M. (ed.) (2013) Fauna Europaea version 2.6. Web Service available online at http://www.faunaeur.org
sample specifications:
quantitative (abundance data), qualitative
1000
The frequency and location of zooplankton sampling is dictated by the purpose of the study. Locate sampling stations as near as possible to those selected for phytoplankton, benthic organisms and physical-chemical sampling. Surface water samples were collected from the lakes in five stations per lake and three stations per Danube branch stations. Zooplankton is collected by filtering 30 liters of water from the surface of the water body through plankton net (55 µm mesh size) and fixed immediately with absolute ethanol, into plastic container. Sedimentation is the preferred method of concentration because it is non-selective and non-destructive (unlike filtration or centrifugation which can damage many of the rotiferans and cladocera species). From each sample 1 ml sub-sample is placed in a Sedgwick-Rafter counting cell for identification and enumeration under optical microscope at 20X to 40X magnification. From each sample, depending on sample location and concentration 1-4 ml sub-samples were analyzed.
Clesceri L. S., Greenberg A. E., Trussell R. R., (ed.) Crumpton W. G., Murray A. P., Paterson R. A., Sellner K. G., Suidan M. T., Sullivan B. F., Swartz R., Sweeney R. A. & Walsh G. E. (1989) Biological examination of water. Part 10000, Standard Methods for the examination of water and waste water 17th Edition. Washington American Public Health Association: 10-194
composite samples
transect

macrophytes

sample information:
covered timeframe:

year from - to:
1996 - 2014
historical data:
no
palaeo data:
no
season:
spring, summer, autumn
temporal resolution/frequency of sampling:
per year
time series data:
no
taxonomic resolution:
order, family, sub-family, genus, species
percentage of species level data:
100
taxonomic coding:
taxalist according to:
Flora Europaea
http://en.wikipedia.org/wiki/Flora_Europaea
Natura 2000; EU-code
1428, Marsilea quadrifolia
sample specifications:
quantitative (abundance data), qualitative, presence/absence
no
700
The Kohler survey method. During visits of the lakes by canoe a varying number of relevees per lake was sampled, depending on lake size, allocated time, observed variation in the vegetation. Each relevee had a diameter of c. 5 m; total plant cover, and cover of individual plant species and filamentous algae were established using both visual observation and by rake operation. For each species the percentage cover projected at the bottom was estimated using a 5-point scale.
Kohler, A. (1978): Methoden der Kartierung von Flora und Vegetation von Süßwasserbiotopen. Landschaft + Stadt 10 (2): 73-85.
habitat specific samples
transect
other important sample related informations:
Environmental factors considered were: depth (m), lake size (ha), amplitude (m) cumulative residence time (days), soil organic matter content (%), and soil clay fraction (%). The lakes were ordinated along Principal Component axes (PCA, in CANOCO, Ter Braak, 1991). The main ordination shows three directions: 1) clear mineral lakes with a dense vegetation; 2) turbid mineral lakes with a sparse vegetation; 3) isolated plaur lakes.

Other specifications

GIS layers, shapes related to the dataset:
species distribution
hydrological information (as HydroSHEDS)
catchments, river-sub-basins
land use
dams/reservoirs/barriers
protected areas
environmental variables (freshwater or terrestrial)
no
no
quality control procedures:
Were any quality control procedures applied to your dataset?
no
Querytime: 0.07081 sec