File:Definitiu.svg
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[edit]DescriptionDefinitiu.svg |
Català: La cadena tròfica o cadena alimentària és la seqüència de transferència de nutrients i energia en forma d'aliment a través de diferents espècies d'una comunitat biològica, en la qual cadascuna s'alimenta de la precedent i serveix d'aliment de la següent. La primera baula o nivell tròfic és el productor, que obté l'energia de la llum del sol, mitjançant la fotosíntesi; els següents nivells l'obtenen del nivell immediatament anterior. Així, l'energia flueix a través de la cadena de forma lineal i ascendent. A cada pas d'un nivell a un altre es produeix una gran pèrdua d'energia, de manera que la longitud d'una cadena no sol tenir més de quatre o cinc nivells.
"Il·lustració vectorial realitzada amb l'assessorament de Mercè Piqueras, biòloga" Español: La cadena trófica o cadena alimentaria es la secuencia de transferencia de nutrientes y energía en forma de alimento a través de diferentes especies de una comunidad biológica, en la que cada una se alimenta de la precedente y es alimento de la siguiente. El primer eslabón o nivel trófico es el productor, que obtiene la energía de la luz del sol, mediante la fotosíntesis; los siguientes eslabones la obtienen del eslabón inmediatamente anterior. Así, la energía fluye a través de la cadena de forma lineal y ascendente. En cada paso de un nivel a otro se produce una gran pérdida de energía, por lo que la longitud de una cadena no suele tener más de cuatro o cinco niveles.
"Ilustración vectorial realizada con el asesoramiento de Mercè Piqueras, bióloga"
English: The trophic chain or food chain is the sequence of nutrients and energy transfer through different species of a biological community in which each species feeds on the preceding one and is eaten by the following one. The first trophic level is that of producers, which obtain energy from sunlight, through photosynthesis; each of the following levels obtain energy from the preceding level. Thus, energy flows through the food chain in a linear, ascending way. At each step, from a level to the following one, there is a great loss of energy, so the length of a trophic chain usually has no more than four or five levels.
"Vector Illustration made on the advice of Mercè Piqueras, biologist"
Italiano: La catena trofica o catena alimentare è la sequenza di trasferimento di nutrienti e di energia come cibo attraverso diverse specie di una comunità biologica in cui ogni specie si ciba della precedente e serve di cibo alla seguente. Il primo livello è quello dei produttori, che ottengono energia dalla luce del sole, attraverso la fotosintesi; ognuno dei seguenti livelli l'ottiene dal livello inmediatamente precedente. Così, l'energia scorre attraverso la catena in modo lineare e ascendente. In ogni transizione da un nivello a un altro avviene una grande perdita di energia;
"Illustrazione vettoriale fatto su consiglio di Mercè Piqueras, biologo"
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Source | Own work | |||
Author | Raquelarellanoleo | |||
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