Quantifying vegetation health at Macquarie Island before and after pest species eradication. скачать в хорошем качестве

Quantifying vegetation health at Macquarie Island before and after pest species eradication.

I use freely available Landsat Earth Observation multispectral imagery and ProRaster Scientific to quantify vegetation health at Macquarie Island before and after a long-term pest species eradication program. Located halfway between New Zealand and Antarctica, Macquarie Island is a cold and windswept haven for Southern Ocean sea birds, penguins, and marine mammals. A program has been conducted by Australian governments to eradicate pest species on the island including rabbits, rats, and mice. These pest species were degrading the island vegetation and impacting the breeding behaviour of resident and visiting wildlife. I acquire Landsat 7 scenes from 1999-2002 and Landsat 8 & 9 scenes from 2022-2024 to compare NDVI (vegetation index) statistics before the eradication program and after it. The data show a stark improvement that testifies to the success of the program. You can purchase ProRaster Scientific on the Microsoft Store. https://www.microsoft.com/store/apps/... For more information on ProRaster Scientific, visit: https://robertsgeospatial.com.au/prod... You can find detailed information on the ProRaster Scientific Help page at: https://robertsgeospatial.com.au/prod... For more information on the ProRaster product family, visit: https://robertsgeospatial.com.au/prod... For more information on Roberts Geospatial Engineering visit: https://robertsgeospatial.com.au/ Some Macquarie Island articles: https://www.abc.net.au/news/2024-05-3... https://www.antarctica.gov.au/news/20... 0:00 Introduction 2:02 ProRaster Scientific 2:48 Importing Landsat 7- 8 - 9 Scenes 4:25 Browsing the Scenes 8:58 Creating Composited Mosaic Products 11:34 Processing - masking, spectral index, calculator, statistics 15:20 Late time (2023-24) NDVI statistics 16:58 Early time (1999-2002) NDVI statistics 18:16 Rendering and comparing NDVI over time