Trophic status and the pelagic system in Lago Maggiore

Bernardi, R. de; Giussani, G.; Manca, Marina; Ruggiu, Delio

doi:10.1007/978-94-009-0467-5_1

Cited by 15 publications

(35 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fish became trapped in impoundments behind dams and landlocked populations developed, for example since 1922 at Omodeo and since 1957 at Flumendosa (QUIGNARD and DOUCHEMENT, 1991). Agone is becoming increasingly rare in other northern Italian lakes (GIUSSANI, 1989 ;BERNADI et al, 1990 ;MÜLLER and MENG, 1992). This paper establishes the occurrence of Alosa agone in Lake Shkodra (= Lake Skadar, 371 km 2 , two thirds in Former Yugoslavia and one third in Albania ; Figure 1) in sympatry with A. fallax nilotica, the anadromous Twaite shad (RAKAJ, 1995).…”

Section: Introductionsupporting

confidence: 55%

Occurrence of Agone Alosa Agone in Lake Shkodra, Albania in Sympatry With Twaite Shad Alosa Fallax Nilotica.

Rakaj

Crivellì

2001

Bull. Fr. Pêche Piscic.

View full text Add to dashboard Cite

Twaite shad, Alosa fallax nilotica occurs in Lake Shkodra (Albania) in sympatry with Agone Alosa agone. Differences in morpho-meristic variables, in the biology and the ecology of the two species are presented and potential explanations for the occurrence of these shad populations in sympatry are discussed. Key-words :Alosa fallax, Alosa agone, sympatry, Lake Shkodra, Albania. PRÉSENCE DE L'ALOSE DE LAC, ALOSA AGONE, DANS LE LAC SHKODRA EN ALBANIE EN SYMPATRIE AVEC L'ALOSE FEINTE ALOSA FALLAX NILOTICA. RÉSUMÉDans le lac Shkodra (Albanie), on observe l'alose feinte Alosa fallax nilotica en sympatrie avec l'alose de lac Alosa agone. La forme des deux espèces diffère significativement comme le montre l'analyse discriminante de quatorze caractères morphoméristiques. Des différences entre les deux espèces sont observées dans leur biologie et leur écologie. Des hypothèses sont présentées pour expliquer la présence de ces deux espèces en sympatrie.

show abstract

Section: Introductionsupporting

confidence: 55%

Occurrence of Agone Alosa Agone in Lake Shkodra, Albania in Sympatry With Twaite Shad Alosa Fallax Nilotica.

Rakaj

Crivellì

2001

Bull. Fr. Pêche Piscic.

View full text Add to dashboard Cite

show abstract

“…Being phosphorus-limited (TP max ca. 10 µg L −1 ), the lake is oligotrophic and has recovered from eutrophication of the late 1970s [20,21].…”

Section: Methodsmentioning

confidence: 99%

Defining Seasonal Functional Traits of a Freshwater Zooplankton Community Using δ13C and δ15N Stable Isotope Analysis

Visconti

Caroni

Rawcliffe

et al. 2018

Water

View full text Add to dashboard Cite

Abstract:Functional-based approaches are increasingly being used to define the functional diversity of aquatic ecosystems. In this study, we proposed the use of δ 13 C and δ 15 N stable isotopes as a proxy of zooplankton functional traits in Lake Maggiore, a large, deep subalpine Italian lake. We analyzed the seasonal pattern of δ 13 C and δ 15 N signatures of different crustacean zooplankton taxa to determine food sources, preferred habitats, and trophic positions of species throughout one year. The cladocerans Daphnia longispina galeata gr., Diaphanosoma brachyurum, and Eubosmina longispina were grouped into a primary consumer functional group from their δ 13 C and δ 15 N isotopic signatures, but while the former two species shared the same food sources, the latter exhibited a more selective feeding strategy. Cyclopoid copepods occupied a distinct functional group from the other secondary consumers, being the most 15 N enriched group in the lake. The δ 15 N signature of calanoid copepods showed trophic enrichment in comparison to Daphnia and Eubosmina and linear mixing model results confirmed a predator-prey relationship. In our study, we have demonstrated that the use of δ 13 C and δ 15 N stable isotopes represented an effective tool to define ecological roles of freshwater zooplankton species and to determine functional diversity in a lake.

show abstract

“…Water temperatures were measured with multiparameter probes (Garda) or with mercury-filled Celsius thermometers (Maggiore) every month and every two weeks in Garda and Maggiore, respectively. In this work, we will use the temperatures measured in the 0-50 m water layer, which coincides with the layer where zooplankton was traditionally sampled for long-term monitoring of deep lakes (de Bernardi et al, 1990;Salmaso and NaselliFlores, 1999). The choice of this layer was also justified because our interest was directed towards biological response to common climate drivers, rather than to direct impact of climate on water temperature, traditionally investigated by using lake surface water temperatures (LSWTs; Livingstone and Dokulil, 2001;Dokulil et al, 2010).…”

Section: Sampling Field Measurements and Laboratory Analysesmentioning

confidence: 99%

Inter-annual climate variability and zooplankton: applying teleconnection indices to two deep subalpine lakes in Italy

Manca

Rogora²,

Salmaso

2014

J Limnol

View full text Add to dashboard Cite

show abstract

Trophic status and the pelagic system in Lago Maggiore

Cited by 15 publications

References 1 publication

Occurrence of Agone Alosa Agone in Lake Shkodra, Albania in Sympatry With Twaite Shad Alosa Fallax Nilotica.

Occurrence of Agone Alosa Agone in Lake Shkodra, Albania in Sympatry With Twaite Shad Alosa Fallax Nilotica.

Defining Seasonal Functional Traits of a Freshwater Zooplankton Community Using δ13C and δ15N Stable Isotope Analysis

Inter-annual climate variability and zooplankton: applying teleconnection indices to two deep subalpine lakes in Italy

Contact Info

Product

Resources

About