Apologies for our recent lazyness in posting. The whole group was very busy with publishing in the past months. The upcoming issue of Philosophical Transactions of the Royal Society B: Biological Sciences, (#367) contains a bunch of interesting papers on allometric approaches on climate change issues. The papers discuss, how body size of species can help to estimate the consequences of warming and nutrient enrichment, by presenting studies carried out in various ecological systems as well as some high-end modelling approaches. The content is available as online early view. Please check out!
Further, we attended a conference of the German Society for Ecology (GfÖ) in Lüneburg, took a students field trip to Crete and had a very nice group retreat at the Edersee.
Another reason for the scarce postings is, that this tumblr-service has some major shortcommings for the usage as a working group blog. We look for alternative solutions but, since setting these things up is time-consuming, and we are busy scientists in the first place, it does not have highest priority. Anyway, please be patient and check out this blog once in a while, to see if there is something new. (FDS)
After two weeks of language course (Bahasa Indonesia) and the official Kick-Off workshop of the CRC 990 Andrew Barnes and Malte Jochum have returned to Göttingen and Miriam Teuscher will follow soon. During this time they were able to visit all four of the transformation systems where their research will take place. From this visit they were able to establish connections with Indonesian counterparts and get a first look at the working conditions in the field. The pictures below give a brief impression of their journey.
(ADB & MJ)
(ADB & MJ)
We just returned from the Web of Life Conference in Montpellier. This great meeting was organised by a team around Sonia Kefi and Nicolas Mouquet from the CNRS in Montpellier. On tuesday we enjoyed brilliant talks from speakers from all over the world. I will try to report some details later. The talks will be available on the internet. (FDS)
Miriam Teuscher, Andrew Barnes and Malte Jochum are about to leave for Indonesia this weekend. As PhD researchers, they belong to the Collaborative Research Centre 990 “Ecological and socioeconomic functions of tropical lowland rainforest transformation systems (Sumatra, Indonesia)” in the projects B01 “Structure, stability and functioning of macro-invertebrate communities in rainforest transformation systems in Sumatra (Indonesia)” (Andrew and Malte) and B11 “Biodiversity enrichment in oil palm plantations: ecological and socio-economic impacts” (Miriam). The CRC will have its official start with a Kick-Off-Workshop from June 19th to 21st in Bogor, near Jakarta (Java) and Jambi (Sumatra). The three of them will attend a language course and afterwards they will stay near Jambi to conduct the first animal sampling and settle into their new work environment. They will make sure to keep us updated on their work progress and present some nice pictures of Southeast-Asian biodiversity. (MJ)
Ecologists - they’re in burning deserts, the steamy rainforest, the freezing Antarctic … and the kareoke bars of Seta. Why? Because they’d all been to the 59th annual meeting of the Japanese Ecological Society (together with the East Asian Ecological Societies) and headed for nearby Seta to continue the academic discussions. Around 2000 posters at the meeting, the biggest selection I’ve ever seen, and a great variety of talks, including sessions on interaction webs, on climate change, and on biodiversity. Biodiversity opened with my talk “The dynamics of food chains under climate change and nutrient enrichment”. After the conference I visited Michio Kondoh in Ryukoku university near Seta - inspiring discussions there. At the end of last week I visited the Center of Ecological Research of the Kyoto university and gave a seminar about trophic cascades and species extinction risk. Now I am packing my things and am off tomorrow for Hokkaido University, Sapporo, where I’m due to give another seminar to their ecologists. (AB)
all photos by AB
Very busy clicking everywhere… All of us are preparing their presentation for this afternoon. We will hear about: landuse models (innovators vs. imitators in an agricultural framework), hydrological dynamics (pollution of a well), urban dynamics (street construction and urban sprawl) and a lot of ecological examples (competition between grass species, clustering of trees, butterfly corridors and predator-prey dynamics). I’m really looking forward to hear all of them, because all students did a very good job during the last week in coming up with own ideas and implementing them in NetLogo.
Tonight will be the final Gala-Dinner and then the intensive program is over. I really liked the topic and the people…and France.
We show by an integrated modelling approach that the apparently idiosyncratic effects of multiple predators in a microcosm experiment become comprehensible in the light of allometry. Furthermore, we present a novel type of experimental design for composition experiments. You should not miss this! (FDS)
1 Schneider, F. D., Scheu, S. and Brose, U. (2012), Body mass constraints on feeding rates determine the consequences of predator loss. Ecology Letters. doi: 10.1111/j.1461-0248.2012.01750.x
Okuyama compared indirectly derived parameters for handling time and search time with parameters measured directly. He states that without making a strong assumption, e.g. by fixing the handling time and fitting only the other parameters, a model would be of no use. That would make it necessary to measure one of the parameters, e.g. the handling time, directly. I don’t understand yet, what happens when using more complex models with many more parameters, e.g. body mass dependences as in our previous work 2,3, but I guess this should be a point for discussion. (FDS)
1 Okuyama, T. (2012) Flexible components of functional responses, Journal of Animal Ecology, 81, 185–189
2 Rall, B. C., Kalinkat, G., Ott, D., Vucic-Pestic, O. and Brose, U. (2011), Taxonomic versus allometric constraints on non-linear interaction strengths, Oikos, 120: 483–492
3 Vucic-Pestic, O., Rall, B. C., Kalinkat, G. and Brose, U. (2010), Allometric functional response model: body masses constrain interaction strengths. Journal of Animal Ecology, 79: 249–256.
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1J.F. Blumenbach Institute of Zoology and Anthropology
University of Göttingen
Berliner Str. 28
D-37073 Göttingen, Germany
2to whom technical issues and comments should be adressed:
f_schneider [insert "@"] bio.tu-darmstadt.de
ubrose [insert "@"] gwdg.de