Authors: M. Lora, M. Sánchez, H. Campos, A. González, J ... · Coordinator: Carolina Clavijo...
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Authors : M. Lora, M. Sánchez, H. Campos, A. González, J. Núñez Teachers : E. Cano, J. P. López, A. Díaz, C. Sáez de Oña Coordinator : Carolina Clavijo Aumont I.E.S. Ítaca s/n 41940 Tomares (Seville), I.E.S. Chaves Nogales s/n 41020 Seville (Seville) [email protected] [email protected] INTRODUCTION In this project is evaluated the influence of vegetation cover on soil invertebrate communities. It consists on a quantitative and qualitative study in two different ecosystems, an eucalyptus forest and a grassland MATERIALS - 4 pitfall per ecosystem - 100 ml of alcohol 70% - Plastic covers - Tweezers - Trays OBJECTIVES - To study the richness and diversity of the aboveground invertebrate fauna in two contrasted ecosystems. - To evaluate the pitfall traps as a methodology to sample the aboveground invertebrate community. - Describe the key features, habitat and type of feeding of the invertebrate groups collected during the sampling. - Analyze the data to make comparisons between the abundance and diversity of invertebrate species present in each of the studied ecosystems. - To discuss how vegetation cover may affect the soil invertebrate fauna. ACNOWLEDGEMENTS Thanks to the University of Seville, the Faculty of Biology and his Dean. Prof. Antonio Ildefonso Torres Rueda as well as the coordinator of the project "Jóvenes Investigadores" Carolina Clavijo Aumont to allow us carrying out this successful and unique project. To thank the doctors Esperanza Cano Sanchez and Pablo Jose Lopez Gonzalez, as well as the teachers Ana Diaz Perez, Carmen Sáez de Oña and Maria Fernandez Núñez for the help given always and for making an effort. Finally mention our respective teachers Pilar Villar Navarro, Maria Naranjo Suarez, Ana Díaz Pérez, Carmen Sáez de Oña and our schools, IES Itaca and I.E.S. Chaves Nogales. To all of them for undertaking this research and motivate us CONCLUSIONS 1. The grassland ecosystem had higher richness of species and large taxonomic groups than the Eucalyptus forest. 2. The soil invertebrate fauna was different according to the vegetation cover under the one which it develops. 3. The data analysis showed that in the grassland there were more abundance of invertebrates living than in the Eucalyptus forest and in turn there was more species - Binocular loupes - Identification keys - Filters - Petri dishes - Plastic Bottles PROCEDURE The sampling was done in a plot located in the University Pablo de Olavide, where we select the two sampling areas. In each one, we put a total of four pitfall traps in order to analyze, later in the laboratory, the amount and type of organisms that have fallen, by studying the key features of each of them. Once having identified all the specimens caught, we developed a table of abundances and performed the necessary calculations to establish the possible comparisons between the richness and diversity of invertebrate species present in both environments. This table shows the data collected from the experiment in both plots. The species were classifyed and grouped by large taxonomic groups in each ecosystem. The table is divided into Eucalyptus forest and Grassland, showing each individual sample taken from each ecosystem. In the grassland, we found a total of eighteen species, while in the Eucalyptus site were found only eleven species. Nine of these species were shared by both environments, whereas nine others were exclussive from the grassland and other three from the Eucalyptus forest. We can see the species average values in each ecosystem. The deviation that presents the data in its distribution regarding the mean gives us information of the data dispersion. This diagram shows the average number of specimens caught from the large groups found in both ecosystems. Apart from the arachnids in the eucalyptus, the other groups are larger in the grassland. ANALISIS & RESULTS We can see how the insects is the dominant group in both ecosystems, being in the grassland 24% higher. The abundance of specimens is higher in the grassland in 3 of the 4 major groups studied, except from Arachnids which is higher in the Eucalyptus.
Transcript of Authors: M. Lora, M. Sánchez, H. Campos, A. González, J ... · Coordinator: Carolina Clavijo...
Authors: M. Lora, M. Sánchez, H. Campos, A. González, J. NúñezTeachers: E. Cano, J. P. López, A. Díaz, C. Sáez de Oña
Coordinator: Carolina Clavijo AumontI.E.S. Ítaca s/n 41940 Tomares (Seville), I.E.S. Chaves Nogales s/n 41020 Seville (Seville)
[email protected]@ieschavesnogales.es
INTRODUCTIONIn this project is evaluated the influence of vegetation cover on soil invertebrate communities. It consists on a quantitative and qualitative study in two different ecosystems, an eucalyptus forest and a grassland
MATERIALS
- 4 pitfall per ecosystem- 100 ml of alcohol 70%- Plastic covers- Tweezers- Trays
OBJECTIVES
- To study the richness and diversity of the aboveground invertebrate fauna in two contrasted ecosystems.- To evaluate the pitfall traps as a methodology to sample the aboveground invertebrate community.- Describe the key features, habitat and type of feeding of the invertebrate groups collected during the sampling.- Analyze the data to make comparisons between the abundance and diversity of invertebrate species present in each of the studied ecosystems.- To discuss how vegetation cover may affect the soil invertebrate fauna.
ACNOWLEDGEMENTS
Thanks to the University of Seville, the Faculty of Biology and his Dean. Prof. Antonio Ildefonso Torres Rueda as well as the coordinator of the project "Jóvenes Investigadores" Carolina Clavijo Aumont to allow us carrying out this successful and unique project.
To thank the doctors Esperanza Cano Sanchez and Pablo Jose Lopez Gonzalez, as well as the teachers Ana Diaz Perez, Carmen Sáez de Oña and Maria Fernandez Núñez for the help given always and for making an effort.
Finally mention our respective teachers Pilar Villar Navarro, Maria Naranjo Suarez, Ana Díaz Pérez, Carmen Sáez de Oña and our schools, IES Itaca and I.E.S. Chaves Nogales. To all of them for undertaking this research and motivate us
CONCLUSIONS
1. The grassland ecosystem had higher richness of species and large taxonomic groups than the Eucalyptus forest.
2. The soil invertebrate fauna was different according to the vegetation cover under the one which it develops.
3. The data analysis showed that in the grassland there were more abundance of invertebrates living than in the Eucalyptus forest and in turn there was more species
- Binocular loupes- Identification keys- Filters- Petri dishes- Plastic Bottles
PROCEDURE
The sampling was done in a plot located in the University Pablo de Olavide, where we select the two sampling areas. In each one, we put a total of four pitfall traps in order to analyze, later in the laboratory, the amount and type of organisms that have fallen, by studying the key features of each of them.
Once having identified all the specimens caught, we developed a table of abundances and performed the necessary calculations to establish the possible comparisons between the richness and diversity of invertebrate species present in both environments.
This table shows the data collected from the experiment in both plots. Thespecies were classifyed and grouped by large taxonomic groups in eachecosystem. The table is divided into Eucalyptus forest and Grassland,showing each individual sample taken from each ecosystem.
In the grassland, we found a total of eighteen species, while in theEucalyptus site were found only eleven species. Nine of these specieswere shared by both environments, whereas nine others were exclussivefrom the grassland and other three from the Eucalyptus forest.
We can see the species average values in each ecosystem. The deviation that presents the data in its distribution regarding the mean gives us information of the data dispersion.
This diagram shows the average number of specimens caught from the large groups found in both ecosystems. Apart from the arachnids in the eucalyptus, the other groups are larger in the grassland.
ANALISIS & RESULTS
We can see how the insects is the dominant group in both ecosystems, being in the grassland 24% higher. The abundance of specimens is higher in the grassland in 3 of the 4 major groups studied, except from Arachnids which is higher in the Eucalyptus.
