scholarly journals Phytoplankton Dynamics and Water Quality in the Venice Lagoon

Water ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 2780
Author(s):  
Fabrizio Bernardi Aubry ◽  
Francesco Acri ◽  
Stefania Finotto ◽  
Alessandra Pugnetti
Keyword(s):  
Water Quality ◽  
Floristic Composition ◽  
Venice Lagoon ◽  
Research Network ◽  
Phytoplankton Abundance ◽  
Phytoplankton Communities ◽  
Long Term Ecological Research ◽  
Long Term Trends ◽  
Long Term Trend

We analyzed the phytoplankton abundance and community structure monthly over a 20-year period (1998–2017) at five stations in the Venice lagoon (VL), one of the sites belonging to the Long-Term Ecological Research network of Italy (LTER-Italy). We focused on phytoplankton seasonal patterns, inter-annual variability and long-term trends in relation to water quality. Diatoms numerically dominated (ca. 60% on average), followed by nanoflagellates (37%), while coccolithophorids and dinoflagellates contributed less than 2%. We observed distinct seasonal and inter-annual changes in the abundance and floristic composition of the phytoplankton groups, whilst no clear long-term trend was statistically significant. We also assessed the water quality changes, applying to our dataset the multimetric phytoplankton index (MPI), recently officially adopted by Italy to accomplish the water framework directive (WFD) requirements. The index evidenced a temporal improvement of the water quality from “moderate” to “good” and allowed us to confirm its reliability to address the changes in the water quality, not only spatially—as previously known—but also for following the yearly time trends. Overall, our results highlight the importance of long-term observations, for understanding the variability in the phytoplankton communities of the lagoon as well as the relevance of their use to test and apply synthetic descriptors of water quality, in compliance with the environmental directives.

scholarly journals Exploiting observations and measurement data standard for distributed LTER-Italy freshwater sites. Water quality issues

2016 ◽  
Author(s):  
Simone Lanucara ◽  
Paola Carrara ◽  
Alessandro Oggioni ◽  
Michela Rogora ◽  
Lyudmila Kamburska ◽  
...  
Keyword(s):  
Water Quality ◽  
Open Source Software ◽  
Measurement Data ◽  
Mountain Lakes ◽  
Research Network ◽  
Ecological Research ◽  
Data Standard ◽  
Long Term Ecological Research ◽  
Open Geospatial Consortium

Water quality is a multi-source, multi-purpose problem that needs exploiting observations, often taken by a number of heterogeneous bodies. This problem has been tackled within the Italian Long Term Ecological research network (LTER-Italy) in an experiment aimed at testing how ecological observations of mountain lakes water can be shared by OGC (Open Geospatial Consortium) standard services of the Sensor Web Enablement (SWE) initiative. A friendly and easy implementation of these services is fostered by the usage of the open source software Geoinformation Enabling Toolkit StarterKit ® (GET-IT). It has been used in the experiment to create SOS services, upload observations and create SensorML metadata of the involved sensors. This contribution describes the experiment and presents its results.

scholarly journals Exploiting observations and measurement data standard for distributed LTER-Italy freshwater sites. Water quality issues

2016 ◽  
Author(s):  
Simone Lanucara ◽  
Paola Carrara ◽  
Alessandro Oggioni ◽  
Michela Rogora ◽  
Lyudmila Kamburska ◽  
...  
Keyword(s):  
Water Quality ◽  
Open Source Software ◽  
Measurement Data ◽  
Mountain Lakes ◽  
Research Network ◽  
Ecological Research ◽  
Data Standard ◽  
Long Term Ecological Research ◽  
Open Geospatial Consortium

Water quality is a multi-source, multi-purpose problem that needs exploiting observations, often taken by a number of heterogeneous bodies. This problem has been tackled within the Italian Long Term Ecological research network (LTER-Italy) in an experiment aimed at testing how ecological observations of mountain lakes water can be shared by OGC (Open Geospatial Consortium) standard services of the Sensor Web Enablement (SWE) initiative. A friendly and easy implementation of these services is fostered by the usage of the open source software Geoinformation Enabling Toolkit StarterKit ® (GET-IT). It has been used in the experiment to create SOS services, upload observations and create SensorML metadata of the involved sensors. This contribution describes the experiment and presents its results.

scholarly journals Exploiting observations and measurement data standard for distributed LTER-Italy freshwater sites. Water quality issues.

2016 ◽  
Author(s):  
Simone Lanucara ◽  
Paola Carrara ◽  
Alessandro Oggioni ◽  
Michela Rogora ◽  
Lyudmila Kamburska ◽  
...  
Keyword(s):  
Water Quality ◽  
Open Source Software ◽  
Measurement Data ◽  
Mountain Lakes ◽  
Research Network ◽  
Ecological Research ◽  
Data Standard ◽  
Long Term Ecological Research ◽  
Open Geospatial Consortium

Water quality is a multi-source, multi-purpose problem that needs exploiting observations, often taken by a number of heterogeneous bodies. This problem has been tackled within the Italian Long Term Ecological research network (LTER-Italy) in an experiment aimed at testing how ecological observations of mountain lakes water can be shared by OGC (Open Geospatial Consortium) standard services of the Sensor Web Enablement (SWE) initiative. A friendly and easy implementation of these services is fostered by the usage of the open source software Geoinformation Enabling Toolkit StarterKit ® (GET-IT). It has been used in the experiment to create SOS services, upload observations and create SensorML metadata of the involved sensors. This contribution describes the experiment and presents its results.

scholarly journals Connectivity: insights from the U.S. Long Term Ecological Research Network

Ecosphere ◽  
2021 ◽  
Vol 12 (5) ◽  
Author(s):  
David M. Iwaniec ◽  
Michael Gooseff ◽  
Katharine N. Suding ◽  
David Samuel Johnson ◽  
Daniel C. Reed ◽  
...  
Keyword(s):  
Research Network ◽  
Ecological Research ◽  
Long Term Ecological Research ◽  
The U.S

scholarly journals Different long-term trends of the oxygen red 630.0 nm line nightglow intensity as the result of lowering the ionosphere F2 layer

2008 ◽  
Vol 26 (8) ◽  
pp. 2069-2080 ◽  
Author(s):  
N. B. Gudadze ◽  
G. G. Didebulidze ◽  
L. N. Lomidze ◽  
G. Sh. Javakhishvili ◽  
M. A. Marsagishvili ◽  
...  
Keyword(s):  
Electron Density ◽  
Line Intensity ◽  
Peak Height ◽  
Height Distribution ◽  
Theoretical Simulation ◽  
Type Layer ◽  
Long Term Trends ◽  
The Mean ◽  
Long Term Trend

Abstract. Long-term observations of total nightglow intensity of the atomic oxygen red 630.0 nm line at Abastumani (41.75° N, 42.82° E) in 1957–1993 and measurements of the ionosphere F2 layer parameters from the Tbilisi ionosphere station (41.65° N, 44.75° E) in 1963–1986 have been analyzed. It is shown that a decrease in the long-term trend of the mean annual red 630.0 nm line intensity from the pre-midnight value (+0.770±1.045 R/year) to its minimum negative value (−1.080±0.670 R/year) at the midnight/after midnight is a possible result of the observed lowering of the peak height of the ionosphere F2 layer electron density hmF2 (−0.455±0.343 km/year). A theoretical simulation is carried out using a simple Chapman-type layer (damping in time) for the height distribution of the F2 layer electron density. The estimated values of the lowering in the hmF2, the increase in the red line intensity at pre-midnight and its decrease at midnight/after midnight are close to their observational ones, when a negative trend in the total neutral density of the upper atmosphere and an increase in the mean northward wind (or its possible consequence – a decrease in the southward one) are assumed.

scholarly journals Patterns and trends of organic matter processing and transport: Insights from the US Long-Term Ecological Research network

2021 ◽  
pp. 100025
Author(s):  
Tamara K. Harms ◽  
Peter M. Groffman ◽  
Lihini Aluwihare ◽  
Chris Craft ◽  
William R Wieder ◽  
...  
Keyword(s):  
Organic Matter ◽  
Research Network ◽  
Ecological Research ◽  
The Us ◽  
Long Term Ecological Research ◽  
Organic Matter Processing

scholarly journals Fine-scale multiannual survey of benthic invertebrates in a glacier-fed stream used for hydropower generation

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Alberto Scotti ◽  
Roberta Bottarin
Keyword(s):  
Research Programme ◽  
Eastern Alps ◽  
Hydropower Plant ◽  
Research Network ◽  
Small Hydropower ◽  
Hydropower Plants ◽  
Before And After ◽  
Long Term Ecological Research ◽  
Research Facilities

AbstractThe present dataset contains information about aquatic macroinvertebrates and environmental variables collected before and after the implementation of a small “run-of-river” hydropower plant on the Saldur stream, a glacier-fed stream located in the Italian Central-Eastern Alps. Between 2015 and 2019, with two sampling events per year, we collected and identified 34,836 organisms in 6 sampling sites located within a 6 km stretch of the stream. Given the current boom of the hydropower sector worldwide, and the growing contribution of small hydropower plants to energy production, data here included may represent an important – and long advocated – baseline to assess the effects that these kinds of powerplants have on the riverine ecosystem. Moreover, since the Saldur stream is part of the International Long Term Ecological Research network, this dataset also constitutes part of the data gathered within this research programme. All samples are preserved at Eurac Research facilities.

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