CAUSES OF THE DIEBACK OF LITTORAL STANDS IN AN OVERPOPULATED WATER BIRD RESERVE: ROLE OF EUTROPHICATION, FISH AND GEESE

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12220%2F21%3A43903993" target="_blank" >RIV/60076658:12220/21:43903993 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985939:_____/21:00553630

Výsledek na webu

<a href="https://ejes.cz/index.php/ejes/article/view/782/350" target="_blank" >https://ejes.cz/index.php/ejes/article/view/782/350</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14712/23361964.2021.9" target="_blank" >10.14712/23361964.2021.9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

CAUSES OF THE DIEBACK OF LITTORAL STANDS IN AN OVERPOPULATED WATER BIRD RESERVE: ROLE OF EUTROPHICATION, FISH AND GEESE

Popis výsledku v původním jazyce

European fishponds can serve as refuges for water birds if the fish stocks are limited, but the effects of other ecological factors on their ecological stability are rarely considered. The aim of this study is to determine the causes of marked dieback of littoral stands dominated by Typha angustifolia L. in a hypertrophic fishpond that is also a valuable water bird reserve. A field study and two experiments were conducted in order to separate the effects of mineral nutrient availability, redox conditions, fish and water birds. The physico-chemical characteristics of the water and sediments confirmed hypertrophic conditions in the fishpond, but a mesocosm experiment did not indicate it had a negative effect on plant growth. On the other hand, a field enclosure experiment showed that in sparse stands, unfenced parts had a significantly smaller shoot density than fenced parts. This was attributed to grazing by greylag geese (Anser anser L.). In addition, damage to belowground parts of plants were ascribed to large individuals of albeit a few large common carp (Cyprinus carpio L.). This study highlights a conservation dilemma as large numbers of geese destroy littoral stands in fishpond nature reserves, which then become unsuitable nesting sites for other species of water birds

Název v anglickém jazyce

CAUSES OF THE DIEBACK OF LITTORAL STANDS IN AN OVERPOPULATED WATER BIRD RESERVE: ROLE OF EUTROPHICATION, FISH AND GEESE

Popis výsledku anglicky

European fishponds can serve as refuges for water birds if the fish stocks are limited, but the effects of other ecological factors on their ecological stability are rarely considered. The aim of this study is to determine the causes of marked dieback of littoral stands dominated by Typha angustifolia L. in a hypertrophic fishpond that is also a valuable water bird reserve. A field study and two experiments were conducted in order to separate the effects of mineral nutrient availability, redox conditions, fish and water birds. The physico-chemical characteristics of the water and sediments confirmed hypertrophic conditions in the fishpond, but a mesocosm experiment did not indicate it had a negative effect on plant growth. On the other hand, a field enclosure experiment showed that in sparse stands, unfenced parts had a significantly smaller shoot density than fenced parts. This was attributed to grazing by greylag geese (Anser anser L.). In addition, damage to belowground parts of plants were ascribed to large individuals of albeit a few large common carp (Cyprinus carpio L.). This study highlights a conservation dilemma as large numbers of geese destroy littoral stands in fishpond nature reserves, which then become unsuitable nesting sites for other species of water birds

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

European Journal of Environmental Sciences

ISSN

1805-0174

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

79-90

Kód UT WoS článku

000731576800003

EID výsledku v databázi Scopus

2-s2.0-85123572247