Stoichiometric patterns in cold oligotrophic aquatic systems
| Název práce v češtině: | Stoichiometric patterns in cold oligotrophic aquatic systems |
|---|---|
| Název v anglickém jazyce: | Stoichiometric patterns in cold oligotrophic aquatic systems |
| Klíčová slova: | nitrogen, phosphorus, oligotrophic, sediment, cryoconite |
| Klíčová slova anglicky: | nitrogen, phosphorus, oligotrophic, sediment, cryoconite |
| Akademický rok vypsání: | 2015/2016 |
| Typ práce: | bakalářská práce |
| Jazyk práce: | angličtina |
| Ústav: | Katedra ekologie (31-162) |
| Vedoucí / školitel: | Mgr. Jakub Žárský, Ph.D. |
| Řešitel: | skrytý - zadáno vedoucím/školitelem |
| Datum přihlášení: | 13.11.2015 |
| Datum zadání: | 14.11.2015 |
| Datum odevzdání elektronické podoby: | 16.08.2016 |
| Datum proběhlé obhajoby: | 09.09.2016 |
| Oponenti: | prof. Ing. Jan Vymazal, CSc. |
| Předběžná náplň práce |
| The primary motivation comes from a recent observation from the High Arctic glaciers in Petuniabukta (central part of the Spitsbergen island, Svalbard, Vonnahme et al. in review) showing sites of tardigrade and algal dominance versus rotifer and cyanobacterial dominance. We assume that these differences are caused by different ratios in available nutrients on observed sites. Since these ecosystems were studied mainly from the descriptive point of view and the knowledge about the principles shaping the primary production and trophic interactions in this environment is scarce, we extend focus of the study to environments with some level of analogy to the ablation zones of glaciers. The goal is to gather published data on elemental composition of different ecological players in oligotrophic high alpine or polar lakes without fish to get a more general picture about nutrient fluxes and potential limitations between the sediments, the detritus (primary producers, bacteria) and metazoans. Such information will help to establish potential scenarios and the drivers of the processes and trophic interactions on glacial surface. The bachelor thesis should work as a solid intellectual background for the bachelor’s master thesis on direct evidence of the elemental compositon of animals and primary producers from cryoconite samples. |
| Předběžná náplň práce v anglickém jazyce |
| The primary motivation comes from a recent observation from the High Arctic glaciers in Petuniabukta (central part of the Spitsbergen island, Svalbard, Vonnahme et al. in review) showing sites of tardigrade and algal dominance versus rotifer and cyanobacterial dominance. We assume that these differences are caused by different ratios in available nutrients on observed sites. Since these ecosystems were studied mainly from the descriptive point of view and the knowledge about the principles shaping the primary production and trophic interactions in this environment is scarce, we extend focus of the study to environments with some level of analogy to the ablation zones of glaciers. The goal is to gather published data on elemental composition of different ecological players in oligotrophic high alpine or polar lakes without fish to get a more general picture about nutrient fluxes and potential limitations between the sediments, the detritus (primary producers, bacteria) and metazoans. Such information will help to establish potential scenarios and the drivers of the processes and trophic interactions on glacial surface. The bachelor thesis should work as a solid intellectual background for the bachelor’s master thesis on direct evidence of the elemental compositon of animals and primary producers from cryoconite samples. |