I guess: number of pollens and the spores; species of pollens and the spores. The first one might be positively related to biomass; the second one can be a reflection of species change

My basic knowledge about the pollen studies: determination of the species and classification give us a brief information about the climate: it is a good indicator for example for arid conditions etc.

please Zeynep I will so much appreciate you if you can give me some of the parameters used in pollen studies.....especially in maize(pollen study in maize). I am currently working on the effect of our localy manufactured organic fertilizers on the grain quality, grain yield......etc of maize varieties in Nigeria...........looking forward to reading from you.

thanks

It is a very good study

you can estimate no. of pollen that are viable before after using organic fertiliser before that no. of pollens formed per plant or infloresence can be taken as a one of the criteria. So these two parameters will be affecting the fertilisation very much. While coming to the organic fertiliser you must also take care about the foliar application and soil application. While coming to the climate change the pollens can be tested all season in a year then we can know its viability and other parameters etc.

Thank you very much Dr. A.M A. I am very grateful, and I will appreciate further contribution on the topic...Climate change/organic fertilizer/pollen grains

Sure iam ready to give you the suggestion regarding the topic

Thanks for all the responses

The vegetation is very sensitive to global climate changes. To deduct the climate parameters using palynology, we need : (1) to identify morphologic and botanic the pollen grains (one pollen grain may have 250 different characters, concerning the structure of exine, ornementation, number, size, shape, position of apertures, etc). ; (2) you need to provide extensive countings ( 200 − 500 pollen grains /sample); (3) to group the identified taxa according to ecological significance (4) to applied transfer fonctions for analysed pollen grains for obtaining climate parameters ( mean annual temperature, mean temperature for the coldest and warmest month, rainfall). For more information , please look Dr. Speranta-Maria POPESCU and Dr. Jean - Pierre SUC publications, concerning vegetation changes in Europe since 24 MA. Some of these publish papers are on the Dr. S.-. Popescu Reserach Gate page

How can we use the pollens in criminal investigations.

Clothing of suspects can be checked to take samples of pollen and match them with the site of crime, moreover in case of murders the clothing of the murdered person can give clue about the exact site of crime via pollen analysis..

Pollen is an excellent bioindicator. You can see these papers of my reseach group:

http://www.uco.es/aerobiologia/publicaciones/modelling/climate_change/Heat_requirement.pdf

http://www.uco.es/aerobiologia/publicaciones/modelling/climate_change/Quercus_AAEM_def.pdf

http://www.uco.es/aerobiologia/publicaciones/modelling/climate_change/Stach.pdf

http://www.uco.es/aerobiologia/publicaciones/modelling/climate_change/Cecchi_projections_2010.pdf

Thanks alot sir...

Jennifer, climate control vegetation pattern, therefore some specific pollen and spores tend to bloom under a particular type of climate (warm/wet & cold/dry). Looking at such abundance of sporomorphs helps to determin prevailing climate at a time interval..... also check my abtract through google...(Adojoh Onema phytoecology, 2010). Let me know further.