Next Article in Journal
Redox Dynamics and Oxygen Reduction Rates of Infiltrating Urban Stormwater beneath Low Impact Development (LID)
Next Article in Special Issue
Assessing Variation in Water Balance Components in Mountainous Inland River Basin Experiencing Climate Change
Previous Article in Journal
Terrestrial Sediment Yield Projection under the Bias-Corrected Nonstationary Scenarios with Hydrologic Extremes
Previous Article in Special Issue
Phosphorus Retention in Stormwater Control Structures across Streamflow in Urban and Suburban Watersheds
Article Menu

Export Article

Open AccessArticle
Water 2016, 8(10), 436; doi:10.3390/w8100436

Nonlinear Changes in Land Cover and Sediment Runoff in a New Zealand Catchment Dominated by Plantation Forestry and Livestock Grazing

1
Department of Geography, Texas State University, San Marcos, TX 78666, USA
2
Landscape & Land Use Change Institute (LLUCI), Norman, OK 73069, USA
3
National Institute of Water and Atmospheric Research (NIWA), Hamilton, 3216, New Zealand
4
Department of Geography and Environmental Sustainability, University of Oklahoma, Norman, OK 73019, USA
*
Author to whom correspondence should be addressed.
Received: 30 July 2016 / Accepted: 23 September 2016 / Published: 4 October 2016
(This article belongs to the Special Issue Land Use, Climate, and Water Resources)
View Full-Text   |   Download PDF [5447 KB, uploaded 4 October 2016]   |  

Abstract

Land cover can change frequently on intensively managed landscapes, affecting water quality across different spatiotemporal scales. Multi-resolution datasets are necessary in order to assess the extent and trends of these changes, as well as potential cross-scale interactions. In this study, both spatial and temporal analyses of land disturbance (i.e., soil exposure from vegetation removal) and water quality were performed on datasets ranging from daily to yearly time scales. Time-series analyses of land disturbance were compared against the water quality variables of total suspended solids (TSS), turbidity, and visual clarity for the Hoteo River catchment on the North Island of New Zealand for the 2000–2013 period. During forest harvest and recovery phases, exotic forests were the dominant disturbance, up to five times the area of grassland disturbance; while after recovery, grasslands assumed the dominant role, for up to 16 times the area of forest disturbance. Time-series of TSS from field sampling (2000–2013) and TSS-event analyses (2012–2014) displayed distinct nonlinear patterns, suggesting that after major events, sediment that is stored in the landscape is exhausted and a period of sediment build-up follows until the next major event. Time-series analyses also showed a connection between trends in connected land disturbance and visual water clarity, with connected disturbance having the potential to be a water quality indicator. Future research should be conducted at even finer spatiotemporal scales over longer periods in order to identify effects of localized land disturbances on downstream water quality. View Full-Text
Keywords: nonlinear relationships; land use change; sediment erosion; landscape disturbance; river water quality; plantation forestry; livestock grazing nonlinear relationships; land use change; sediment erosion; landscape disturbance; river water quality; plantation forestry; livestock grazing
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Kamarinas, I.; Julian, J.P.; Hughes, A.O.; Owsley, B.C.; de Beurs, K.M. Nonlinear Changes in Land Cover and Sediment Runoff in a New Zealand Catchment Dominated by Plantation Forestry and Livestock Grazing. Water 2016, 8, 436.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top