Understanding the Biodiversity Crisis: Introduction to Ecology and Conservation

Overview

The biodiversity crisis represents one of the most pressing challenges of our time, with ecosystems facing unprecedented rates of species loss. This course provides students with an introduction to the fundamental principles of ecology and the principles and practices of conservation biology.

We will look at a range of different habitats and organisms to gain an understanding of how species and communities, as well as their interactions, are shaped by the environment they inhabit. Our focus ranges from the individual species and populations all the way up to interactions among all the species within a habitat. We will also gain an understanding of the threats facing species and ecosystems, and discuss how conservation biology offers at least partial mitigations for some of these threats including looking at the role of rewilding, breeding in zoos, and species reintroductions.

We will finish the course with two case studies that integrate all of the different practices and theories covered in the course. The first will look at the challenging environmental conditions facing the animals and plants inhabiting extreme environments such as the polar regions, the deserts, and the deepest parts of our oceans, before discussing some of the wonderful ecological adaptations that these organisms have evolved to survive and thrive in these inhospitable places. In the second case study, we will look at the unique ecology and threats facing animals and plants inhabiting remote islands, where invasive species and habitat destruction have an even stronger impact than on the mainland, as island endemics have nowhere to escape to.


This course combines online study with a weekly 1-hour live webinar led by your tutor. Find out more about how our short online courses are taught.


Programme details

This course begins on the 15 Sep 2025 which is when course materials are made available to students. Students should study these materials in advance of the first live meeting which will be held on 22 Sep 2025, 3:00-4:00pm (UK time).

Week 1:  Course introduction. What is biodiversity?

Week 2:  Organismal ecology

Week 3:  Population ecology

Week 4:  Community ecology

Week 5:  Ecosystem ecology

Week 6: How to survey different organisms in a range of habitats

Week 7: The fundamentals of conservation biology

Week 8: Rewilding, restoration and reintroductions

Week 9: Case-study 1 - Ecology and Conservation of extreme habitats: The polar regions, the deserts and the deep sea.

Week 10: Case-study 2 - Ecology and Conservation of oceanic islands

Certification

Credit Application Transfer Scheme (CATS) points 

Coursework is an integral part of all online courses and everyone enrolled will be expected to do coursework. All those enrolled on an online course are registered for credit and will be awarded CATS points for completing work at the required standard.

See more information on CATS points

Digital credentials

All students who pass their final assignment will be eligible for a digital Certificate of Completion. Upon successful completion, you will receive a link to download a University of Oxford digital certificate. Information on how to access this digital certificate will be emailed to you after the end of the course. The certificate will show your name, the course title and the dates of the course you attended. You will be able to download your certificate or share it on social media if you choose to do so. 

Please note that assignments are not graded but are marked either pass or fail. 

Fees

Description Costs
Course Fee £360.00

Funding

If you are in receipt of a UK state benefit, you are a full-time student in the UK or a student on a low income, you may be eligible for a reduction of 50% of tuition fees. Please see the below link for full details:

Concessionary fees for short courses

Tutor

Dr Thomas Hesselberg

Thomas is a zoologist and behavioural ecologists who has studied spiders, insects and worms for more than 15 years in both temperate and tropical climates. He is course-director for the department's PgCert in Ecological Survey Techniques, and, in addition to his teaching for the Department for Continuing Education, he is a lecturer in biological sciences at St. Anne's College.

Course aims

  • To equip students to understand the basic principles and concepts of ecology, the importance of biodiversity and how to mitigate for the many anthropegenic threats facing natural ecosystems and the species inhabiting them.
  • To introduce students to the principles and concepts of ecology, including ecosystem dynamics, species interactions, and biodiversity surveying techniques.
  • To encourage critical thinking and problem-solving skills in relation to ecological surveying and biodiversity conservation by equipping student with the skills to find and interpret the relevant scientific literature.

Teaching methods

This course takes place over 10 weeks, with a weekly learning schedule and weekly live webinar held on Microsoft Teams. Shortly before a course commences, students are provided with access to an online virtual learning environment, which houses the course content, including video lectures, complemented by readings or other study materials. Any standard web browser can be used to access these materials, but we recommend Google Chrome. Working through these materials over the course of the week will prepare students for a weekly 1-hour live webinar you will share with your expert tutor and fellow students. All courses are structured to amount to 100 study hours, so that on average, you should set aside 10 hours a week for study. Although the course finishes after 10 weeks, all learning materials remain available to all students for 12 months after the course has finished.

All courses are led by an expert tutor. Tutors guide students through the course materials as part of the live interactions during the weekly webinars. Tutors will also provide individualised feedback on your assignments. All online courses are taught in small student cohorts so that you and your peers will form a mutually supportive and vibrant learning community for the duration of the course. You will learn from your fellow students as well as from your tutor, and they will learn from you.

Learning outcomes

By the end of the course students will be expected to:

  • Identify the major causes and drivers of the current biodiversity crisis, including habitat loss, climate change, pollution, overexploitation, and invasive species and recognise how the relative importance of these drivers vary with habitat.
  • Apply ecological and conservation concepts to real-world scenarios and case studies, demonstrating an understanding of how theory translates into practicem while critically engaging with relevant scientific literature.
  • Understand and apply the scientific method and ecological survey techniques to monitor biodiversity and population changes in different ecosystems.

Assessment methods

You will be set two pieces of work for the course. The first of 500 words is due halfway through your course. This does not count towards your final outcome but preparing for it, and the feedback you are given, will help you prepare for your assessed piece of work of 1,500 words due at the end of the course. The assessed work is marked pass or fail.

Application

Please use the 'Book now' button on this page. Alternatively, please complete an enrolment form.

 

Level and demands

This course is open to all and no prior knowledge is required.

 

This course is offered at FHEQ Level 4 (i.e. first year undergraduate level), and you will be expected to engage in independent study in preparation for your assignments and for the weekly webinar. This may take the form, for instance, of reading and analysing set texts, responding to questions or tasks, or preparing work to present in class. Our 10-week Short Online Courses come with an expected total commitment of 100 study hours, including those spent in live webinars.

English Language Requirements

We do not insist that applicants hold an English language certification, but warn that they may be at a disadvantage if their language skills are not of a comparable level to those qualifications listed on our website. If you are confident in your proficiency, please feel free to enrol. For more information regarding English language requirements please follow this link: https://www.conted.ox.ac.uk/about/english-language-requirements