Published online by Cambridge University Press: 06 July 2010
Introduction
Bryophytes do not appear to differ fundamentally from higher plants and green algae in their basic requirements for mineral macronutrients and trace elements. However, bryophytes differ significantly from vascular plants in pathways for nutrient acquisition and these may sometimes have far-reaching consequences for the ecosystems in which they grow. Owing to their specific modes of nutrient capture, bryophytes frequently accumulate chemicals to concentrations far exceeding those in the ambient environment. This property has led to the development of moss biomonitoring methods, which have taken hold firmly in the wider scientific community since the first edition of this book appeared.
As in the earlier edition, this chapter describes the special problems that bryophytes encounter in obtaining essential mineral nutrients, and in dealing with non-essential elements and compounds. Far more is known now than in the earlier edition about nitrogen deposition and utilization by bryophytes, and hence the chapter will focus on these aspects of mineral nutrition and substrate ecology.
The substratum on which a bryophyte grows can be a source of nutrients and other chemicals that may cause stresses. I have retained the useful distinction between “substrate”, used for the substance on which an enzyme or biochemical process works (as in Section 8.3.1), and “substratum”, used for the surface supporting a plant or lichen, although the etymological grounds for this are slight. Substratum specificity and chemical specialisms are considered in some detail but aspects involving competition and population dynamics are now largely covered in Chapter 10 by Rydin.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.