Island Biogeography - Science topic

Are you interested in joining our Juglandaceae-network?

We are working on global biogeography and conservation of the relict tree family Juglandaceae. However, the distribution and status knowledge of many species of South-Eastern Asia are not well known.

We are searching therefore for local experts of Engelhardia apoensis. According to our knowledge, the species is present in continental Malaysia, Borneo, Brunei, Philippines. Please see the attached schematic map with known distribution (administrative units & countries).

Any information, maps, publications, reports, personal observations, etc. from your region are interesting for us.

Good day! I am looking for a model that links the number of species (N) on an isle with its area (S), and, probably, with additional parameters. I suppose that N=a*S^b (MacArthur-Wilson?) was a starting point and that there exist more complicated models. Can anyone recommend a good review? Many thanks in advance!

Hello. My name is Malte. In my master thesis I study assemblages of Meso and Makrofauna associated with arboreal soil in tree-cavities, following an approach of island biogeography. In my study design the two predictors "size of tree cavity (amount of arboreal soil)" and "isolation (distance between tree cavity and terrestrial ground)" are included. Taking samples of twelve trees - sampling 1 tree cavity per each tree, 2 surveys with one year inbetween were conducted, including the following steps: Removal of arboreal soil of tree-cavities, Extraction of Fauna, Sterilization and restoration of arboreal soil into tree-cavities. I determined taxonomic groups to order level and counted the individuals. Having my dataset complete, the first thing I want to look at, analyzing my data, is the occurence probability of the insular groups (those that are bound to the arboreal soil in tree-cavities, e.g. Crassiclitellata) as a function of the predictors described above. I want to perform a zero-inflated regression model as it can consider the two distinct stochastic processes - 1. Colonization and 2. Abundace > 0 (Kéry and Royle 2015).

Let us consider a set of fossil occurrences of the same lineage in two separated geographic spaces (e. g., two landmasses, two hydrographic basins, two ocean basins).

Given such dataset, would it be possible to use the time intervals of fossil occurrences to calculate dispersal time estimates, or the earliest occurrence of the lineage in the geographic space to which it has dispersed? What would be the best method to use?

Does the more modern patch dynamics concept of Townsend replace the traditional Island Biogeography Theory of McArthur & Wilson?

please refer to species turnover, species packing, metacommunities and reproductive viability of species.

I would appreciate if I can get more articles on the paper, I cannot find the open access papers on the topic.

I have collected a lot of specimens, drown in a small pool at the Pantokrator Peak, at the yard of the monastery (together with many other insects, and some spiders).

I am looking for an inventory where all known species of plants and animals in the Socotra archipelago are registered.

Thanks in advantage.

Reference: Linnell et al. 2016

where can I find data on the canary islands? Data including the species and their distribution, bathymetric maps of the area to be able to tell sea level change over time this is to help with a dissertation, main topic is how climate change has affected island biogeographies. 

I know it was arrived in France with Baudin expedition, and in 1812 was given at natural sciences museum of Torino. I know it is a juvenile of 5 weeks and there are no information about localities. What i'm trying to understand if it was a specimen from Kangaroo island or King Island? 

I am keen to hear from anyone who has knowledge or data about the persistence of black rats (Rattus rattus) on dry offshore islands. Islands here in Shark Bay Western Australia dont have black rats and are some of the driest in the State with <250mm rainfall annually. These islands have a maritime and settlement history to indicate black rats would have been brought in by sea. However, they do not occur on them. We are doing a study to understand if other dry islands elsewhere in the world dont have black rats (yet probably should do), and if water is a limiting factor to their persistence. Thanks.

Good Day,

I am trying to figure the analysis I need to do for my project. I study shrimp and fish in 3 tropical intermittent streams. I am testing to see if there is a difference in species composition at different elevations. My experimental design includes a low, mid-, and high elevation site in each stream. I have selected 3 streams, so therefore 9 sites total. I chose 3 streams so I can say with confidence that a species distribution changes with elevation. I have been sampling for a year. I have sampled at each site 4 random times in the year; therefore, I have collected 12 samples for each stream (4 at the low site, 4 at the mid-site and 4 at the high elevation site). Altogether 36 samples. We have a dry and wet season here. Seasonality is a covariable.

What is the best way to setup my data? Recommendations for analysis? Help is much appreciated:)

Thank You,

Kayla

Island biogeography is essentially a concept of colonisation vs extinction in relation to various environmental factors. What is not new is equilibrium points well explained in keynesian economics (macro economics). I was just curioius if the analogies were compared. 

I.e. not just the destruction of native species by predating, like with rats or Euglandina rosea, but replacing in some other way, concurrence for resources or something. Maybe on the islands or in the some insular habitats. Especially interesting with invertebrates (have a case with land snails). I need some references with examples in citable journals.

Something akin to the notion of a Lazarus speceis: ""Lazarus species" is applied to organisms that have been rediscovered as being still alive after having been widely considered extinct for years". The idea of a Romeo Error is when conservationists pre-maturely label a species "EXTINCT" and then do NOTHING to conserve its habitat...so it may eventually die-off after no conservation attention has been given (yet it was alive!). Do freshwater fish biologists/naturalists find this term useful. Any examples? Is there anything published using this term or its kin?

In order to get insight in the biodiverstity of a particular area containing islands, rifs and continental coasts, do we have to implement the biodiversity by a theory based on environmental equilibrium or based on random migrations and drifts? Your suggestions will be very helpful